Just because bad things have happened to you it unfortunately it doesn't mean you don't do bad things to other people.

In fact if you look round the world, that's where most of the viciousness comes from. It doesn't matter where you look, or at what level, global, national, in society, ibn the family. Turning the other cheek is still seen as a crazy and impossible way of behaving (especially maybe by the so-called "religious" right in America) and yet it's the only way things can ever get better.