Zechnophobe said:
Now this is a much meatier topic. For the sake of argument, why would you 'fucking kill' a zoopheliac? It may not be something you want to do, but I don't exactly think it obviously a crime punishable by death. Same is true for most of the other things you listed.
To be fair, pedophilia (including most of the lolicon stuff), rape, guro, and debatably necrophilia all almost certainly qualify for the death penality. Pedophilia because it's gross abuse of children, rape because it's, well,
rape, and guro because at the end of the day one or both parties are going to be missing some probably vital body parts. Necrophilia is pretty much the most extreme way to disrespect the dead, and while I'm not sure that qualifies for execution, it's pretty damn disturbing and I'd definitely punch someone I caught doing it.
Bestiality is just gross. Not really worthy of death, but definitely disturbing on a number of levels.