The Amish typically resolve disputes on their own, without involving law enforcement; however, several beard cutting victims reported the attacks to police out of concern that Mullet was operating a cult. Mullet (who did not participate directly in the attacks) and a group of his followers were arrested in late 2011, and their case went to trial in late August 2012. It was the first case in Ohio that applied a landmark 2009 federal law—the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act—which gave the government increased powers to prosecute crimes motivated by bigotry.

During the trial, prosecutors argued that Mullet believed he was above the law and kept tight control over his followers with a kind of cult-like domination. Among other things, he censored their mail and imposed punishments on adults such as paddling and confinement in chicken coops. The prosecution also presented witness testimony that Mullet had pressured married female followers to have sex with him under the guise of marital counseling. Defense lawyers, who called no witnesses, did not dispute that the beard and hair cuttings took place. However, they said the acts were simple assaults that did not meet the definition of hate crimes because they were based on personal feuds rather than religious motives. The defense also contended that the shearings were performed out of compassion in order to convince the recipients to return to a stricter Amish lifestyle.