A retired Tennessee law enforcement officer was held in jail for more than a month this fall after police arrested him over a Facebook post of a meme related to the September assassination of conservative activist Charlie Kirk.

Prosecutors eventually dropped the criminal charge brought against Larry Bushart, but his stint behind bars came to exemplify the country’s tense political and legal climate following the tragedy, when conservatives sought to stymie public discourse about the late controversial figure that it saw as objectionable.

Now, Bushart is suing over his incarceration.