First lesson: Don’t mace people for asking you to turn off your phone during a movie. Wait, scratch that. First lesson: Don’t use your phone during a movie. Then, don’t mace someone if they ask you to turn it off. Easy enough, right? Apparently not. During a screening at last night’s AFI FEST (Mr. Turner, to be precise, which doesn’t sound like the kind of film to stir ire in people, but there you go), a man was reportedly maced for asking a woman to turn off her cell phone during the film. A number of outlets have reported on the incident, from Variety to The Hollywood Reporter, and it seems as if the man set the woman off by tapping on her shoulder after she refused to acknowledge his prescence or request, leading her to scream about him hitting her and then macing him. This is a problem. This is obviously a problem, right?