Violence, rape against men
I noticed that it is taboo to joke about rape, but only when the victim is a female. However, no one cares when male rape victims are made fun of. Alot of people will say that prisoners, especially those convicted of violent crimes, deserve to be raped in prison. However, these people normally mean male prisoners deserve to be raped. If a woman committs an equally horrible crime, no one says (at least publically) that they hope she gets violated in every hole by a big, burly 300 pound prison guard. And it would be taboo to say that no matter what the woman did or how horrible her crime was.
There's a video about Fleece Johnson aka the booty warrior, who describes how he forces men (most likely young, heterosexual men) into receiving anal sex either "the easy way or the hard way". He also talks about how if you "sag your pants in here someone will be all up in your butt". And this video practically made him an internet celebrity, even landing him a role on the Boondocks. Now imagine if this same man was saying the same things, but directing them towards women. Imagine if he talked so matter-of-factly about forcing women to have sex with him "the easy way or the hard way" or him tellling women that if her skirt is too short or her blouse cut too low someone would be "all up in her pussy".
I'll tell you what would happen. If that was directed towards women, there'd be much weeping, wailing, and gnashing of teeth. There'd be calls for Fleece Johnson to be castrated, there'd be internet white knight tough guys talking about what they'd do to him if they ever saw him on the street etc, etc.