One thing I've come to expect on the Internet, is to never expect people to be nice and/or respectful.
Above all, some of these disrespectful players think they can throw their e-peens / crowns (I'm looking at you mentors!) around like it has tonnage.

I'd say the next time something like this happens, laugh it off, share the love in the DF Horror Stories thread, and then remind yourself, you play this game for your own enjoyment.
Life's too short to take a bunch of rude people on the internet seriously.