Google would destroy "Liberty Leading the People" for depicting violent content if they could.
What's the line here? A scripted video depicting one friend punching another gets taken down, but MMA fights, movie scenes of executions, and Jackass clips stay up?
It's dangerous how much of our culture is in the hands of private companies who can restrict or deny your ability to view that piece of culture. They do so on a whim and you have no recourse.