(JTA) – An anonymous Twitter account that mooed at antisemitic tweeters before quitting the platform returned Monday night to take the platform to task one last time.

“You have failed the people who use this platform,” Antisemitism Cow tweeted, tagging Twitter and its CEO, Jack Dorsey. “There is no excuse for your allowing Nazis with tens of thousands of followers to run rampant on your platform. You let it happen. Because of that, blood is on your hands. You are depraved.”

In a thread, Antisemitism Cow said no one should use Twitter until the platform addresses the hate on its platform in a meaningful way. ”I am quitting because no one person should subject themselves to witnessing and calling out the hate that you’ve allowed to fester here. This is your job, and until you do it properly, no sane or good person should use your platform,” the account said. Critics have called on Twitter for years to address the antisemitic, hateful and harassing comments that are frequently made on the platform. In October, Twitter announced it would ban Holocaust denial on its platform in the same week that Facebook announced the same thing. But critics have accused Twitter of failing to do enough to ban antisemitism, even prompting a 48-hour boycott by a group of British celebrities.

Since starting the account in July, Antisemitism Cow attracted more than 23,000 followers by mooing at accounts it deemed to be engaging in antisemitism. Followers often tagged the account in replies to tweets they believed were antisemitic so that Antisemitism Cow could issue its verdict. Antisemitism Cow deactivated in November and, in an interview with Alma, called Twitter “a system that, by definition, creates a poisonous dynamic between people.” As if to prove Antisemitism Cow’s point, an anonymous copycat account called Antisemite Cow launched this month. But rather than calling out antisemitism, the account engaged in it, mooing at Jewish accounts.

Antisemitism Cow ended the tweet thread by signing off the platform for good.

“This account shouldn’t exist because Twitter is not worth fighting for,” it said. “Twitter is a cesspool of pain and misery. While you play with cute features to make it seem like you care about ‘positive engagement,’ your body count grows. I’m not playing the game anymore. Bye.”

Main Photo: Antisemitism Cow, an anonymous account that made mooing at anti-Semitic tweets its mission, returned to lash out at Twitter. (Screenshots from Twitter)