Western christianity didn't leave all violence behind, see for example anti-abortion violence:
http://en.wikipedia.org/wiki/Anti-abortion_violence#United_S...
“You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’ But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also. - Matthew 5:38-39 ESV
http://www.amazon.com/Nonviolence-History-Dangerous-Mark-Kur...