"almost every man killed by his female partner between 2000 and 2009 had previously been violent towards her"

http://m.smh.com.au/nsw/domestic-violence-death-team-caught-in-limbo-after-resignation-of-state-coroner-mary-jerram-20140726-zwzmp.html

A new Milgram type experiment has found one particular group held steady and refused destructive orders: "women who had previously participated in rebellious political activism such as strikes or occupying a factory."

The study also found that people holding left-wing political views were less willing to hurt others. One particular group held steady and refused destructive orders: “women who had previously participated in rebellious political activism such as strikes or occupying a factory.”

http://mic.com/articles/92479/psychologists-have-uncovered-a-troubling-feature-of-people-who-seem-nice-all-the-time