PC: true and to the point.. and someone may be offended because of that, so don't say it.
EXAMPLE: "most white trash have bad teeth"
FAIL! true, and to the point.. but no good..
said white trash will be upset because you have held them in a negative light.
PC "white trash,.. may or may not have bad teeth... and if they do, its someone else's fault."
CORRECT! not accurate, but nobody is mad.
white trash is not mad, because its stated as someone's else's fault, and no one else is mad, because it really is no one else's fault.