Re: What?
They've shown that rape in early cultures led to the woman aborting the fetus, if at all possible, or leaving it to die. The man was typically kicked out of the tribe.
A murderer, without just cause, was normally killed by the family. So really, thank our intelligence for most crimes of that nature.
Except war. War is a universal thing between all from of life, if you define it as violence for a given cause.