Mimes are universally hated in fiction. They're an Acceptable Target of sorts. No real reason is ever given, but the Uncanny Valley may have something to do with it -- after all, their pure white faces and refusal to speak give them a definite alien aura. This trope isn't limited to people who hate mimes, but also works of fiction that seem to have it out for them. In other words a character doesn't have to say "I hate mimes" for it to be this trope. All the character needs to do is fall on, punch, kick, or otherwise causes intentional or accidental harm to a mime.