A bayonet fighter never steps back, but I acknowledge I should have stuck with the term used by the OP, Insult, just to keep the train of thought on track.

But in my defense, using the oracale Wikipedia, the first line of the entry on harrassment is: "Harassment covers a wide range of offensive behaviour. It is commonly understood as behaviour intended to disturb or upset."

http://en.wikipedia.org/wiki/Harassment

That (disturb or upset) was what I suggest the OP set out to do, wether he admits it or not.