Rapper Killer Mike on Saturday defended himself against criticism from fans after appearing on NRATV, the broadcast arm of the National Rifle Association.

Killer Mike, whose real name is Michael Render, was a prominent supporter of Sen. Bernie Sanders (I-Vt.) during Sanders’ presidential campaign in 2016. He gave an interview on NRATV criticizing school walkouts and gun violence protests the same day that hundreds of thousands of people gathered for the March for Our Lives rallies.

Killer Mike said in the interview that he is a gun owner and staunch supporter of the Second Amendment, and that he discouraged his children from joining in the school protests against gun violence that took place in the weeks following February’s Florida high school shooting.

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“I told my kids on the school walkout: I love you; if you walk out of that school, walk out my house,” Killer Mike said on NRATV.

The rapper, a member of the group Run The Jewels, responded to Twitter users who criticized him for giving the interview.

“I think CNN and Fox are viewpoint propaganda machines. I have appeared on both,” he wrote. “My concerns are with the Blacks in America living under domestic terror that no one seems to wanna address.”

I think CNN & Fox are view point propaganda machines. I have appeared on both. My concerns are with the Blacks in America living under domestic terror that no one seems to wanna address ‍♂️ https://t.co/CsDs6iDRFy

— Killer Mike (@KillerMike) March 24, 2018

I did an interview. Fronting now equals an interview ‍♂️ Ok https://t.co/xIsekQEV1c

— Killer Mike (@KillerMike) March 24, 2018

Killer Mike introduced Sanders during a campaign rally, and was an prominent supporter of the progressive candidate during the 2016 election.

Sanders, whose past record on guns is more moderate than his views on other policies, addressed a crowd of protesting students earlier this week to praise them for “leading the nation in the right direction” and opposing the NRA.

“All across the country, people are sick and tired of gun violence, and the time is now for all of us together to stand up to the NRA and to pass commonsense gun legislation,” Sanders said.