The architect of New York City Mayor Zohran Mamdani’s viral video campaign paid homage to the mastermind of the Oct. 7, 2023, Hamas terror attacks in a series of tweets uncovered by Jewish Insider — posts in which the operative asserted that late Hamas military leader Yahya Sinwar “gave his entire life until the end fighting for his people’s liberation.”

Records show Donald Borenstein got paid more than $90,000 last year by the Mamdani campaign for his services as director of video — a role in which, according to his LinkedIn, he served as “primary cinematographer” for the social media imagery that propelled the democratic socialist legislator into Gracie Mansion. 

Borenstein’s Instagram indicates he has since assumed the title of “creative director” at City Hall, and he has been credited for official videos promoting the mayor and his agenda. Borenstein was also featured in a recent comedy sketch starring Mamdani and his top staffers that was shared on the official NYC Mayor’s Office YouTube channel.

Yet despite receiving attention from The New York Times and New York Post as a member of Mamdani’s inner circle, Borenstein’s profile online has largely escaped notice so far. 

Archives of his X account show that in 2024, a day after Sinwar was killed by the IDF, Borenstein described imagery of his death, captured in Israeli drone footage, as “absolutely overflowing with symbolism.”

“[I]nsanely funny that israelis are so genocidally up their own ass that they have basically hand-delivered one of the most heroic possible images they could here lmao,” Borenstein wrote from his X handle @boringstein on Oct. 17, 2024, and just a few months before Borenstein began working for Mamdani’s campaign.

Borenstein appears to have deleted this tweet, and all others referenced in this story, at some later point, though archived images remain accessible.

Federal Election Commission filings show that a few months before the posts, Borenstein wrapped up work for another politician highly critical of Israel: then-Rep. Jamaal Bowman (D-NY), who was serving out the last few months of his term after he lost his reelection to a primary challenge from Rep. George Latimer (D-NY). 

The cinematographer further mocked the Israeli decision to release the video of Sinwar sitting on a couch and tossing a stick at the drone moments before he was killed.

“‘[S]urely this man who gave his entire life until the end fighting for his people’s liberation with no proxy will look bad when we show footage of his last stand,’” Borenstein wrote sarcastically, concluding a third post with the phrase “From the river to the sea,” often understood as calling for the annihilation of the entirety of Israel between the Jordan and the Mediterranean, and three Palestinian flag emojis. 

When one reply compared the terrorist with Tom Hanks’ character in the movie “Saving Private Ryan,” the cinematographer responded with enthusiasm.

“[I]n earnest!!! you could not direct this better lol,” Borenstein replied. “[I] am honestly so deeply moved.”

In another since-deleted tweet, Borenstein wrote that “the fascist state of Israel will fall in our lifetimes.”

Neither the video producer nor the Mamdani team responded to questions about the tweets. 

Borenstein is one of several figures instrumental in Mamdani’s rise whose social media accounts feature explicit support for Sinwar and the terrorist organization he led, even though the mayor has condemned terrorism personally.

In February, JI reported that the co-founder of the independent “Hot Girls for Zohran” social media and canvassing campaign had also shared multiple pro-Hamas posts. In March, JI reported that Mamdani’s wife Rama Duwaji — whom The Cut described as a “de facto adviser” to the mayor’s campaign — had liked posts on Instagram celebrating the Oct. 7 attacks.