A bipartisan group of 41 lawmakers wrote to the CEOs of Meta, TikTok and X on Friday urging them to take action in response to the spike in violent antisemitic content posted on their platforms following recent antisemitic attacks in Washington and Boulder, Colo.

“We write to express grave concern regarding disturbing and inflammatory content circulating on your platforms in support of violence and terrorism,” the lawmakers — the majority of whom are Democrats — wrote in the letter, highlighting the rise of rhetoric praising and justifying the two antisemitic attacks. “This content is effectively glorifying, justifying, and inciting future violence, mirroring the surge in hateful rhetoric and open calls to violence and support of terrorism observed after the October 7, 2023 [attacks], and the ensuing Israel-Hamas conflict.”

They urged the administration to take “decisive and transparent steps to curb these dangerous trends and protect all users from the effects of hate and incitement to violence online.”

There has been a “skyrocketing number of antisemitic conspiracy theories accusing the D.C. attack of being a ‘false flag’ operation” online as well as instances of users “glorifying” the D.C. shooter’s actions, the lawmakers said, arguing that this increases the chances of further violence.

“This is not merely a matter of policy enforcement but one of public safety and national security,” the letter reads. “We regard the unchecked spread of pro-terror content, extremist symbolism, and incitement to violence as a direct threat to U.S. national security and public safety … It is critical that social media companies do not allow coded praise of violence or hate speech to flourish unchecked, as this only encourages others to engage in similar acts.”

The letter draws a direct connection between “Failing to meaningfully curb hate speech, including antisemitic mis- and disinformation, and allowing antisemitic incitement to violence” and the attack in Washington.

The lawmakers asked the three platforms to provide clarity on how they plan to respond, including how they will address “coded language” promoting violence and terrorism, how they determine when content that has incited violence is allowed to remain on the platform, how they will be implementing their anti-terorrism policies and how they are addressing the spread of incitement to violence and terrorism in multiple languages.

The letter was led by Reps. Wesley Bell (D-MO) and Don Bacon (R-NE) and signed by Reps. Jake Auchincloss (D-MA), Julia Brownley (D-CA), Sheila Cherfilus-McCormick (D-FL), Gil Cisneros (D-CA), Steve Cohen (D-KY), Jim Costa (D-CA), Danny Davis (D-IL), Don Davis (D-NC), Cleo Fields (D-LA), Brian Fitzpatrick (R-PA), Lois Frankel (D-FL), Laura Friedman (D-CA), Laura Gillen (D-NY), Dan Goldman (D-NY), Jonathan Jackson (D-IL), Raja Krishnamoorthi (D-IL), Greg Landsman (D-OH), Seth Magaziner (D-RI), Grace Meng (D-NY), Jared Moskowitz (D-FL), Donald Norcross (D-NJ), Jimmy Panetta (D-CA), Chris Pappas (D-NH), Brad Schneider (D-IL), Kim Schrier (D-WA), Brad Sherman (D-CA), Greg Stanton (D-AZ), Haley Stevens (D-MI), Marilyn Strickland (D-WA), Tom Suozzi (D-NY), Shri Thanedar (D-MI), Dina Titus (D-NV), Ritchie Torres (D-NY), Juan Vargas (D-CA), Marc Veasey (D-TX), Eugene Vindman (D-VA), Debbie Wasserman Schultz (D-FL), Nikema Williams (D-GA) and Frederica Wilson (D-FL).

Bacon and Fitzpatrick were the only Republican signatories. Krishnamoorthi, Pappas and Stevens are all mounting bids for the Senate in their respective states.

The Anti-Defamation League and American Jewish Committee supported the letter.