Some good advice from Karen Amstrong.

"There are times when you have to speak out against injustice or cruelty. But if you speak — and this is what Gandhi said — in order to punish or wound, you will do more harm than good. The Dalai Lama said that to condemn injustice with hatred in your voice will make the injustice worse. ... So it does no good to attack viciously. The thing to do is not to rise to the bait."

-from an interview with Karen Armstrong in the June issue of the Believer magazine.