Trolls don't really do this irl.. they typically hide behind a 24 hour account anonymously. However, IF this would happen like you said - I would ask what their opinions were based on and have a debate with them. Odds are IF they had the balls irl to do it they have conviction with some good reasons behind it.
Now back to your posting history - I am betting there is a great chance you will recognize you came on a little too strong and start a new account with a less troll-like tone. Does this help you sleep better?