The mind is very powerful. Assaults on the mind are the most debilitating and destructive.
Moral affronts have caustic abilities to infect whole communities and groups of people and cause great evil.
It's funny I'm considering the Tea-Partiers right now and I'm picturing the "Racists-Socialists" doctrine they are currently peddling. I'm seeing in my minds eye this product I saw to kill roaches.
Basically you sprinkle this powder on a couple of roaches or something and basically they take this stuff back to the nest and it's supposed to kill many more roaches.
I'm not purposely calling Tea-Partiers roaches or anything but I'm not sorry that the analogy is taking the path it's taking; I digress. My point is that moral affronts can poison people and can be imported to larger groups of people thereby infecting them.
I hope this makes sense.