It happens to men. It is an act of power and dominance. It is a man's way of avoiding his own sense of inadequacy. Speak out against sexual assault. Making it a public issue can influence attitudes.
Rapists speak in a male voice and act in our name.
If it's not OK, say so in your voice. Others will listen. Examine your own attitudes. Pay some attention to the language men use to refer to women or sex. In any event, sexual objects quickly become sexual targets and, in this culture, sexual violence is one of the results.