A Democratic New York City councilman on Monday defended a liberal, anti-Israel activist for associating with a convicted Palestinian terrorist, arguing the terrorist in question was fighting for "freedom."

Jumaane Williams, who represents New York City's 45th district in Brooklyn, appeared Monday on Fox News to defend the City University of New York (CUNY) Graduate School of Public Health's decision to invite anti-Israel activist Linda Sarsour to give its 2017 commencement address next month. Critics accuse Sarsour of using rhetoric that borders on anti-Semitism and glorifies violence against Israelis.

At one point during the interview, Williams claimed that the "alt-right" was responsible for the outrage against Sarsour. Republican strategist Evan Siegfried questioned those comments, and tweeted at Williams demanding an explanation.

Hi @JumaaneWilliams, are you saying people like me are members of the alt-right because of being offended by Linda Sarsour? — Evan Siegfried (@evansiegfried) May 1, 2017

That set off a Twitter back-and-forth between the two men. Siegfried eventually brought up the fact that Sarsour has defended and appeared on-stage alongside Rasmea Odeh, a terrorist who carried out multiple bombings that killed two Israeli civilians and injured nine more. Odeh was sentenced to life in prison, but was later released as part of a prisoner exchange.

Williams retorted that there were pro-Israeli activists–like Democratic New York politician Dov Hikind–who were once members of extremist organizations as well. Siegfried then rebuked Hikind and asked Williams to do the same of Odeh.

@JumaaneWilliams How about when Sarsour embraced convicted terrorist Rasmea Odeh? Big signal to Jews she's ok w killing & bombing us https://t.co/pxXL86FHeV — Evan Siegfried (@evansiegfried) May 2, 2017

@JumaaneWilliams Dov offends me, but he has nothing to do with Sarsour and what she's said. Yes or no: was it ok for her to embrace & admire Rasmea Odeh? — Evan Siegfried (@evansiegfried) May 2, 2017

But Williams would not, arguing there was a racial bias at play and that people like Odeh can take actions "fighting for their freedom" he does not endorse.

"My point [is] people abound fighting [for] their freedom take actions I don't promote. I find [the] more melanin in [your] skin, [the] more [you're] admonished for it," he tweeted.

@evansiegfried My point people abound fighting 4 their freedom take actions I don't promote. I find more melanin in u're skin more your admonished for it — Jumaane (@JumaaneWilliams) May 2, 2017