Getting shit on by a whole group is different, but so is shitting on someone who has done nothing personal to you compared to giving shit back to someone. That second one is a far more important distinction to me, starting some shit and getting it back tenfold is perfectly fine by me. Just don't start shit and leave people be if you can't take it. I have no patience for people taking opportunistic swings and complaining when they find out they don't get to walk away unscathed.