At "Feminist Philosophers" JJ has a post on some comments by Dick Cavett on Don Imus that struck my fancy: clear, precise, to the point, I wish more of my comments were like that. To Cavett's question, "How can an insult be personal if the person delivering it and the person(s) receiving it don’t know each other?" JJ replies:
Isn’t that just how prejudice works? If you are prejudging, then of course you don’t have to know them to do it.
It's remarkable that this is often forgotten; but it seems easy for us to forget, as Cavett does in his comments.