While I'm not an expert on violent crime, I am fairly sure that most of it is committed by people acting on impulse, not people who have intellectually convinced themselves they are owed something.

This isn't a clean dichotomy. Verbal argument might help to maintain and strengthen someone's feelings of entitlement, resentment, and rage, until these feelings reach the point of motivating a rape (or any kind of violent act) that wouldn't otherwise have occurred.