Hey, just a trick i've been using to piss off all you puny alliance out there when your standing in the "safety" of the guards!
Find a warlock or a hunter with his/her pet out, standing in range of any guards. Use any means necessary to attack the pet from the max range that you can attack it from (out of range from the guards). Generally the pet will be on defensive so it will try to attack you, therefore getting itself and the person controlling the pet killed! GOOD TIMES!
If this is a repost, you can have my shoulder to cry on! Q.Q