Community Security Initiative director Mitch Silber said antisemitic rhetoric online is ‘happening at a much higher run rate than before D.C. and Boulder’

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Metropolitan Police Department and Federal Bureau of Investigation officers stand guard at a perimeter near the Capital Jewish Museum on May 22, 2025 in Washington.
The American Jewish community is facing an “elevated threat” following a surge of violent antisemitic attacks across the country in recent weeks, the FBI and Department of Homeland Security warned last week.
In a joint statement, the FBI and DHS called for increased vigilance among Jewish communities, noting the possibility of copycat attacks after a shooting in Washington in which two Israeli Embassy employees were killed and an attack in Boulder, Colo., in which 15 people were injured in a firebombing targeting advocates calling for the release of hostages in Gaza. “The ongoing Israel-HAMAS conflict may motivate other violent extremists and hate crime perpetrators with similar grievances to conduct violence against Jewish and Israeli communities and their supporters. Foreign terrorist organizations also may try to exploit narratives related to the conflict to inspire attacks in the United States,” the agencies warned.
Jewish organizations that track threats to the community are similarly concerned about online rhetoric following the attacks.
The Anti-Defamation League highlighted that, one day after the incident in Boulder, videos allegedly recorded by the assailant shortly before the assault began circulated on a Telegram channel called Taufan al-Ummah, which translates to “Flood of the Ummah,” a reference to the Al-Aqsa Flood, Hamas’ name for its Oct. 7, 2023, terror attack on Israel. The circulated posts celebrated Soliman’s actions.
The ADL also noted that extremists responded to the attack by spreading conspiracy theories which blamed Jews for the firebombing. Additionally, the Bronx Anti-War Coalition posted a threat shortly after the attack: “May all Zionists live in perpetual fear and paranoia until the day the criminal entity crumbles.”
“The volume of alerts when our social media web scraping tools highlight postings that may be real threats is happening at a much higher run rate than before D.C. and Boulder,” Mitch Silber, director of the Community Security Initiative, which coordinates security for Jewish communities in the New York region, told Jewish Insider.
“I would say it’s unprecedented,” Silber said of the threat Jews are confronting.
Silber also called it “unprecedented that American Jews are being targeted because of Israel’s actions,” referring to the Boulder attack, the killing of the two Israeli Embassy staffers, and an attempted arson attack on the home of Pennsylvania Gov. Josh Shapiro during the holiday of Passover. The suspect in the Boulder attack told investigators he “wanted to kill all Zionist people” and had planned the attack for a year. The shooter in Washington yelled “Free Palestine” shortly after the attack and the arsonist cited Shapiro’s support for Israel as his motive.
These attacks, according to Silber, are distinct from other antisemitic incidents that have occurred in recent years, such as the 2018 Tree of Life synagogue shooting in Pittsburgh — which remains the deadliest attack on Jews on U.S. soil — and the 2022 hostage-taking at Congregation Beth Israel in Colleyville, Texas.
“The key element that’s different here is the motivation of the attacks,” Silber said. The Tree of Life shooter was motivated by HIAS immigration actions and the Colleyville shooter was looking to get an al-Qaida fighter freed. “Of course, antisemitism is the broad brush,” he continued, “but if you look at recent attacks, they are really attacks against Jewish communities in the U.S. because American Jews are stand-ins for the Israelis that these attackers can’t reach.”
CSI is responding in “a multitude of different ways,” Silber said. “It’s been a tsunami of requests from organizations.”
“We’re encouraging any Jewish institution or organization to let us know if they are having an event and that way we can let local law enforcement know,” Silber continued, adding that the group’s new plans include subsidizing armed guards to complement law enforcement at outdoor events hosted by Jewish organizations, as well as expanding its team of analysts searching on social media, surface web and dark web for threats.
“We have more hands on keyboards to give ourselves a better chance of detecting a Boulder or D.C. before it happens,” Silber said.
Community Security Service, a group that provides self-defense and safety training to Jewish institutions, also told JI it is beefing up services in light of the recent attacks.
“Both of the attacks within a two-week timespan have been accompanied by the same kind of slogans that we’ve been hearing on college campuses and yelled at synagogues,” said Richard Priem, CEO of CSS. “That is a new manifestation. Of course we are concerned.”
Following Hamas’ Oct. 7, 2023, attack on Israel and ensuing war in Gaza, CSS saw a dramatic increase in Jewish communities requesting security support, which lasted for about a year, according to Priem. “But over the last two weeks, we’ve had dozens of inquiries from organizations,” he said.
“We are making sure that more quarters of the community use the training that we have for them,” Priem said. “Not just by deploying volunteers for large- or small-scale events but also just giving them guidance and training on how to organize themselves in a way that makes them less vulnerable.”
“We will open some community-wide training sessions in the coming weeks that are open to anyone to give awareness to pre-attack indicators,” he continued. “We have to get out of this mindset that the only way we’re going to solve this is by outsourcing to more companies. We’re not going to get out of this situation unless we as a community start taking ownership and realize we have to do training. We have to pay attention. Whether there’s an increased threat or not, people should do preventative training now.”
Marc Calcano, a former NYPD officer who runs a New York City-based private security firm with several high-profile Jewish clients, echoed that “the level of terror” American Jews face is “extremely high right now” and warned that the Boulder attack, in particular, could be easily replicated.
“I instruct individuals and large groups but I think it’s time for us to do this on a larger scale, which is creating an institution where many can come, here in New York and other states to learn how to physically defend yourself,” Calcano said.
The Jewish community can use fear “to its advantage,” he continued. “We have to learn how to protect ourselves.”
Museum Executive Director Beatrice Gurwitz: ‘We reopen today, and we dedicate ourselves to honor Yaron and Sarah and their commitment to repairing the world and building bridges’

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(L-R) Episcopal Diocese of Washington Bishop Mariann Budde, Adas Israel Congregation Senior Rabbi Lauren Holtzblatt, Masjid Muhammad President and Imam Talib Shareff and Shiloh Baptist Church of Washington Rev. Thomas Bowen address a remembrance and reopening ceremony at the Lillian and Albert Small Capital Jewish Museum on May 29, 2025 in Washington, DC.
WASHINGTON — As visitors entered the Capital Jewish Museum on Thursday morning, open for the first time after an antisemitic attack killed two Israeli Embassy staffers steps from its doors last week, they walked past a makeshift memorial to Sarah Lynn Milgrim and Yaron Lischinsky before security guards wanded them down and checked their bags.
The museum might be reopening, but its staff — and the broader Washington Jewish community — now feel a heaviness that did not exist last week, when the museum was on the cusp of unveiling a major new exhibit about LGBTQ Jews ahead of the World Pride Festival next month. The presence of police officers and heightened security precautions in the newly reopened space were stark reminders of the violence perpetrated by a radicalized gunman who said he killed the two young people “for Gaza.”
A brief ceremony marking the museum’s reopening began with a cantor leading the crowd in singing songs for peace. D.C. Mayor Muriel Bowser pledged to continue to support the Jewish community and called on all Washingtonians to do the same.
“It is not up to the Jewish community to say, ‘Support us.’ It is up to all of us to denounce antisemitism in all forms,” Bowser told the several dozen people at the event.
Bowser, who was instrumental in the creation of the museum, which opened in 2023, urged people in the local community to visit.
“One of my messages to our community here in D.C. is for people of all faiths to keep showing up for the Jewish community and to keep showing up for the Capital Jewish Museum,” she continued. “Spaces like this that teach us history, that allow us to connect, inspire, reflect people coming together, of all backgrounds, faiths, ages, coming from different places in the world and different places in the city, can talk about important ideas and ways that we move together for a better collective future.”
A group of local faith leaders — a rabbi, an imam and two ministers — addressed the crowd, discussing their faiths’ teachings against violence and reflecting on the legacy of Lischinsky and Milgrim, who were killed as they left an American Jewish Committee event for young diplomats. Throughout the ceremony, speakers said the way to fight such hate is with understanding, built at institutions like the Capital Jewish Museum.
“This reopening is exactly what our city, our country and our world needs. To keep telling our stories, who we are as a people, to have us be known, what our values are, what we are to the city, what we contribute and the intricacies of what make us who we are — not only so that we don’t shrink from fear, but also because it is the path to better understanding each other,” said Rabbi Lauren Holtzblatt, senior rabbi at Washington’s Adas Israel Congregation.
Imam Talib Shareef, president and imam of Masjid Muhammad, described the reopening of the museum as an “invitation to embrace our shared, original identity as fruits of the first human, Adam, from which came the many wonderful, beautiful, diverse expressions of human life that have contributed to the strength and unity of our nation.”
To close the event, the museum’s executive director, Beatrice Gurwitz, took to the podium, visibly shaken.
“Last week’s antisemitic attack cannot be our last chapter,” Gurwitz said. “So we reopen today, and we dedicate ourselves to honor Yaron and Sarah and their commitment to repairing the world and building bridges, and we take strength in all of you as we go forward in fulfilling that mission.”
Attendees finished the event by milling about the museum, including its newest exhibit, “LGBTJews in the Federal City,” which tells the story of Washington’s queer Jewish community. Items on display reflected the community’s struggle for inclusion — within the broader Jewish community, and also within the federal government, where workers were penalized for being gay during much of the 20th century.
One Washington Post newspaper clipping from 1979, displayed in the exhibit, reported on the formation of Bet Mishpachah, “a synagogue for homosexuals.” The synagogue’s decision to participate in the article was described as a risk — putting its leaders at personal and professional peril.
More than four decades later, Joshua Maxey, executive director of Bet Mishpachah, delivered remarks to the crowd assembled at the museum on Thursday morning. He described Milgrim as a “passionate advocate” who “made it her mission to ensure that LGBTQ voices were heard and celebrated within our local Jewish community.”
“She made people feel seen, valued and embraced,” Maxey continued. “She approached her work not just as a job, but as a calling. She was a peace broker in the truest sense, someone who lived out our values, our Jewish values of tikkun olam, or repairing the world.”
Israeli Ambassador Yechiel Leiter shared pictures of the vice president signing a condolence book at the embassy

Israel's Ambassador to the United States Yechiel Leiter/X
Vice President JD Vance signs a condolence book at the Israeli Embassy in Washington in memory of Yaron Lischinsky and Sarah Lynn Milgrim on May 27, 2025.
Vice President JD Vance visited the Israeli Embassy in Washington on Tuesday to pay his respects following last Wednesday’s killing of two staffers outside the Capital Jewish Museum in the nation’s capital.
Vance was seen in photos posted on X by Israeli Ambassador to the U.S. Yechiel Leiter signing a condolence book at the embassy honoring the memories of Yaron Lischinsky and Sarah Lynn Milgrim, the two staffers killed in the May 21 attack following a museum event for young diplomats and Jewish professionals hosted by the American Jewish Committee.
“Thank you @VP Vance for coming to the Embassy to honor our dear colleagues and friends, Sarah and Yaron. The care and compassion you and the Trump administration have shown in the wake of this murderous attack are testaments to the enduring friendship between our two countries and peoples, and our mutual battle against terrorism,” Leiter wrote on the social media platform.
Leiter said at a press conference immediately following the shooting that Lischinsky and Milgrim met while working at the embassy and that Lischinsky planned to propose on an upcoming trip to Jerusalem.
The alleged shooter, Elias Rodriguez, has been charged with two counts of first-degree murder, the murder of foreign officials, causing death with a firearm and discharging a firearm in a violent crime. The interim U.S. attorney for the District of Columbia, Jeanine Pirro, said last week that the 31-year-old Chicago native, who was seen on video shouting “free Palestine” and “I did it for Gaza” after the attack, is eligible for the death penalty.
A Vance spokesperson did not respond to Jewish Insider’s request for comment on the visit, though the vice president wrote on X the morning after the shooting that, “My heart breaks for Sarah Milgrim and Yaron Lischinsky, who were murdered last night at the Capital Jewish Museum.”
“Antisemitic violence has no place in the United States. We’re praying for their families and all of our friends at the Israeli Embassy, where the two victims worked,” Vance said at the time.
The reopening will feature a program honoring the victims of last week’s shooting

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A tribute and flowers for Israeli Embassy staff members Yaron Lischinsky and Sarah Lynn Milgrim are seen outside the Lillian and Albert Small Capital Jewish Museum on May 23, 2025 in Washington, DC.
The Lillian and Albert Small Capital Jewish Museum in Washington will reopen on Thursday, eight days after the fatal shooting of two Israeli Embassy staff members outside of the museum.
The building’s reopening will feature a program to honor the memories of Yaron Lischinsky and Sarah Lynn Milgrim, who were killed on May 21 while leaving an event at the museum for young diplomats and Jewish professionals hosted by the American Jewish Committee.
Speakers at the reopening program will include the museum’s leadership, Executive Director Beatrice Gurwitz and Board Chair Chris Wolf, local elected officials including Mayor Muriel Bowser and local clergy.
“We will gather as a community to remember Yaron and Sarah as our thoughts remain with their loved ones,” Gurwitz said in a statement. “This tragedy will not keep us from telling the story of the greater Washington region’s Jewish history for visitors from around the world.”
Lischinsky and Milgrim met while working at the embassy. Lischinsky recently purchased an engagement ring, Israeli Ambassador to the U.S. Yechiel Leiter said following the shooting, and he planned to propose on an upcoming trip to Jerusalem.
The alleged shooter, Elias Rodriguez, a 31-year-old man from Chicago, entered the building after carrying out the shooting and shouted “free Palestine” and “I did it for Gaza,” per an eyewitness. He has been charged with two counts of first-degree murder, the murder of foreign officials, causing death with a firearm and discharging a firearm in a violent crime. He is eligible for the death penalty, according to Jeanine Pirro, the interim U.S. attorney in Washington.
Plus, another purge at the NSC

AP Photo/Tsafrir Abayov
Investors attend the OurCrowd Global Summit in Jerusalem, Thursday, Feb. 1, 2018.
Good Tuesday morning.
In today’s Daily Kickoff, we look at efforts by Israeli tech leaders to encourage a strategy of “economic diplomacy” in Israel’s approach to the Trump administration, and report on the memorial events for the Israeli Embassy staffers killed in Washington last week. We also cover the mass firings of officials on the National Security Council, and report on new legislation put forward by Sens. John Cornyn and Richard Blumenthal to help Jewish families recover Nazi-looted art. Also in today’s Daily Kickoff: Homeland Security Secretary Kristi Noem, former Israeli Ambassador to the U.S. Mike Herzog and Idan Amedi.
What We’re Watching
- Homeland Security Secretary Kristi Noem is in Israel this week. More below.
- Also in Israel, but on separate visits, are Sens. David McCormick (R-PA) and Jacky Rosen (D-NV), as well as Reps. Mike Lawler (R-NY), Sheila Cherfilus-McCormick (D-FL) and Michael McCaul (R-TX).
- The Israel Democracy Institute is hosting its annual Eli Hurvitz Conference in Jerusalem today and tomorrow.
- This evening, the Foreign Ministers’ Conference on Combating Antisemitism, hosted by Israeli Foreign Minister Gideon Sa’ar, kicks off in Jerusalem. The conference will run through tomorrow evening. Earlier today, the Foreign Ministry welcomed Jewish leaders from around the world ahead of the start of the conference.
What You Should Know
A QUICK WORD WITH LAHAV HARKOV
Amid persistent reports of a rift with President Donald Trump, Israeli Prime Minister Benjamin Netanyahu has been seeking to reassure Israelis that everything is fine. But behind the scenes, there are continued signs that the relationship between the two leaders isn’t as close as it was during the president’s first term.
In a press conference last week, Netanyahu said Trump recently expressed his “total commitment” not only to Israel, but to Netanyahu, and that in a recent call with Vice President JD Vance, he told the prime minister, “Don’t pay attention to all the fake news spin about a rupture between us.” U.S. Ambassador to Israel Mike Huckabee called the reports “nonsense,” Netanyahu pointed out, quoting him as saying people should “listen to what the president said and not some source who’s not up to date and pretends that he knows.”
Netanyahu took such pains to say the U.S. and Israel are in constant communication and coordination — at least on Iran and humanitarian aid to Gaza — such that one may get the idea that the prime minister is overcompensating at a time when there’s one headline after another claiming there is friction between Jerusalem and Washington.
Words like “rupture” and “break” may be too strong to describe the current dynamic between Trump and Netanyahu, though there are signs of deep disagreements on some of the most important policy issues for Israel’s national security.
For example, on the issue of Iran’s nuclear program, Homeland Security Secretary Kristi Noem told Fox News from Jerusalem on Monday that “President Trump specifically sent me here to speak with the prime minister about how negotiations are going and how important it is that we stay united and let this process play out.” That conversation, she added, was “quite candid and direct.”
The comments imply that Trump is concerned that Netanyahu is not on the same page as he is and does not plan to wait and see how nuclear talks with Iran unfold before Israel potentially launches a strike. Noem’s comments came days after a phone call between Netanyahu and Trump, which the Prime Minister’s Office readout said included discussion of Iran, and that Israel’s Channel 12 reported was heated. Trump reportedly signaled his confidence in striking what he considers a good deal, and has signaled optimism in public comments over the holiday break that he will have “good news” on the Iranian front.
Trump also publicly pushed for an end to the war in Gaza. On Sunday, the president said “Israel, we’ve been talking to them, and we want to see if we can stop that whole situation” – aka the war in Gaza – “as quickly as possible.” Trump has made clear he wants to be seen as someone who ends wars, but the fighting in Gaza is grinding on without any indication that Hamas is ready to meet Netanyahu’s conditions to end the war: freeing all the hostages, laying down its arms, exile for Hamas leaders, demilitarizing Gaza and implementing Trump’s relocation plan. Netanyahu, however, said that the war will continue and the IDF will occupy more of Gaza to try to eliminate Hamas and pressure it to free the hostages.
Israel is also in a situation where it needs assistance from the U.S. and isn’t making any overtures of its own at this time — certainly, none that can compare to a $400 million presidential plane or a pledge to invest $600 million in the United States. With a president who often views the world through a transactional lens, that can make things more challenging for Israel, as Trump administration sources have noted to Jewish Insider in recent weeks.
In addition, Trump had several close confidantes who were very focused on Israel in his first term. Steve Witkoff and Jason Greenblatt may share similar titles as Trump’s current and former envoys to the region, but Witkoff lacked Greenblatt’s familiarity with Israel and its geopolitical position from the start, and is also responsible for leading nuclear diplomacy with Iran and pursuing a ceasefire between Russia and Ukraine.
Huckabee has only been in Israel for a few weeks and he doesn’t have as close of a relationship with the president as David Friedman did when he was U.S. ambassador. And Jared Kushner’s role as a close family advisor has been filled in the second term by Donald Trump, Jr.
This term, there are also the dueling foreign policy factions within the Trump administration, the so-called “restrainers” and the more traditional Republicans. The Trump administration’s moves to centralize its foreign policy decision-making — diminishing the role of Congress and the National Security Council — has created a situation in which some Israeli officials are uncertain of where to turn to make their case.
The restrainers look like they have the upper hand — with Mike Waltz out as national security advisor and Trump railing against the “so-called nation-builders, neocons or liberal nonprofits” in his recent speech in Saudi Arabia — and some of them hold positions on Israel and the Iranian threat that have raised concerns in Jerusalem.
MEETING THE MOMENT
Israel can’t compete in checkbook diplomacy. These tech leaders have other ideas

During President Donald Trump’s trip to the Middle East earlier this month, he shuttled between Gulf capitals to announce major economic deals. Missing from the list of deals announced on Trump’s Middle East junket was any kind of similar agreement with Israel, which Trump did not visit on his first major trip abroad since returning to office. Economic ties between the U.S. and Israel are strong. But the country lacks the liquid financial firepower that is available to the oil-rich Gulf monarchies, which risks placing Israel at a disadvantage in the eyes of an American president who sees the world as a series of business deals. Some Israeli business leaders and innovators are now urging the country to seriously consider adopting a strategy of “economic diplomacy” to place the country more firmly on Trump’s radar, Jewish Insider’s Gabby Deutch reports.
Pitching Israel: “Founders are Israel’s best ambassadors. They travel more than diplomats, pitch to the world’s biggest investors and solve real-world problems that transcend borders,” said Jon Medved, the Israel-based CEO of OurCrowd, a global venture investing platform. “Do they have a responsibility to engage in economic diplomacy? I think they already do, whether they realize it or not.”