Parkland shooting survivor Kyle Kashuv tore into far-right activist Laura Loomer for wearing a yellow Jewish star to protest her Twitter account being deleted.

Kashuv, who stood in opposition to many of his classmates’ calls for new gun control laws in the wake of the Marjory Stoneman Douglas High School shooting, called Loomer’s act “despicable.”

“I’m sorry, but wearing a Jewish Holocaust star is despicable. I am embarrassed,” Kashuv wrote in a Twitter thread.

“Ratio me all you want, but Laura Loomer acting like an idiot and handcuffing herself to Twitter is crazy enough, forget about wearing a star that my grandparents who got burned alive were,” he wrote. “Comparing being kicked off a private company’s platform to millions dying is despicable.”

Ratio me all you want, but Laura Loomer acting like an idiot and handcuffing herself to @Twitter is crazy enough, forget about wearing a star that my grandparents who got burned alive were.

Comparing being kicked off a private company’s platform to millions dying is despicable. pic.twitter.com/uCjPVH8v3G

— Kyle Kashuv (@KyleKashuv) November 29, 2018

{mosads}Loomer handcuffed herself to Twitter’s New York City offices on Thursday while wearing the star to protest her suspension from the platform. Loomer was permanently suspended from Twitter after sending a number of anti-Islam tweets.

Kashuv wrote that “no one should be banned” from the platform, but said that Loomer’s protest makes others complaining about censorship “look unreasonable and crazy.”

No one should be banned from @Twitter and as a community, powerful voices such as @realDonaldTrump and @benshapiro have spoken out against it. I know people have met with executives at Twitter, too, but what Laura is doing right now makes everyone look unreasonable and crazy.

— Kyle Kashuv (@KyleKashuv) November 29, 2018

Conservatives have long complained of being “shadow-banned” or otherwise silenced on the platform. Twitter has denied intentional bias.