The following passage is from a book called the righteous mind by the moral psychologist Jonanthan Haidt.
Roughly one in a hundred men (and many fewer women) are psychopaths. Most are not violent, but the ones who are commit nearly half of the most serious crimes, such as serial murder, serial rape, and the killing of police officers.
I feel that the meaning is not complete, specifically, what does he mean by:
Most are not violent, but the ones who are commit nearly half of the most serious crimes, such as serial murder, serial rape, and the killing of police officers.
More specifically, what does the following sentence mean?
…but the ones who are commit nearly half of the most serious crimes…
Please, I want a rewording of the entire passage to get the exact meaning.