I highly recommend this exhibition - if it comes anywhere near you, see it. If it doesn't, take a look at the stories on the website.
To forgive is not just to be altruistic. It is the best form of self-interest. It is also a process that does not exclude hatred and anger. These emotions are all part of being human. You should never hate yourself for hating others who do terrible things: the depth of your love is shown by the extent of your anger. (Archbishop Desmond Tutu)