answer:Any response to clearly antagonistic behavior is a reward for them. You are validating that their opinion matters somehow. Silence is the most upsetting response you can provide. I invite you to look through threads here, and on these other sites you visit. When someone is being particularly antagonistic, and the attacked person fails to respond, the attacker will sometimes post two or three times in a row, not wanting to let it go. As if they are shouting like a crazy person at someone who has already left the room.