(AP) — A prominent white nationalist is suing Twitter for banning his account as the social network cracks down on content it deems abusive.

Jared Taylor filed the lawsuit Tuesday in San Francisco. Taylor joins a growing list of right-wing groups and figures who have recently sued social media sites for banning accounts and content.

Social media sites are grappling with how to prevent abusive posts without appearing to censor unpopular opinions.

Taylor alleges that the Twitter ban violates California’s free speech protections. He says the company suspended his account in December, citing its user agreement prohibiting accounts affiliated with groups that promote violence.

Taylor denies that he and his Virginia-based New Century Foundation advocate violence or associate with such groups.

San Francisco-based Twitter declined to comment.