I remember reading once about a peace march. When one group was coming back from the march, some pro-war people started cutting them off and blocking them; everyone started screaming and hitting each other. I thought, "Wait a minute, is there something wrong with this picture? Clobbering people with your peace sign?"
The next time you get angry, check out your righteous indignation, check out your fundamentalism that supports your hatred of this person, because this one really is bad--this politician, that leader, those heads of big companies. Or maybe it's rage at an individual who has harmed you personally or harmed your loved ones. A fundamentalist mind is a mind that becomes rigid. First the heart closes, then the mind becomes hardened into a view, then you can justify your hatred of another human being because of what they represent and what they say and do.