Actually they usually rape any unfortunate ally who gets caught in their raids, and they tend to troll SW often. I've seen more than a few times of SW's AH getting anally raped by multi-boxxing shamans of death when I'm trying to buy/sell on my ally paladin, and no one stands up to them because they die instantly. Then after 1-2 hours of spamming trade trying to form a "raid group" of about 20-30 people together to kill the multi-boxxer, it falls apart almost immediately because the troll in question has had his laughs, gets bored, and then leaves to go do arenas or duels outside Orgrimmar.
As for going near Stormwind, not long ago I attempted my 4th mad dash right up the road leading to SW, purposefully rode my motorbike right in front of the dueling *****s outside, drove right through all the guards, right through the middle of the trade district and on my merry way to the deeprun tram, and this was during the day. I remember the last time I did it a couple weeks ago, I dressed myself so I looked like a draenei, but was riding a horde motorbike, and even though trade district was FULL of lvl 80s and pvp wrathful's and they clearly saw a "red" enemy riding up right into them, no one gave a **** or was too high off their asses to do anything, or just so stupid that they fell for the disguise. Quite funny. And no, I didn't die, nor does Unit X when they wipe the floor with Varian.
It's not about what's fair you tool. It's about honor farm. And I've seen plenty of alliance do the same damn thing. The more I play alliance and horde, the more I realize how full of assclowns the alliance on this server really are.
And let me fix that raid description for you: Unit X invades SW -> kills AH and makes 50+ people cry and moan -> Alliance cry and moan, some hearth to ironforge to use the AH, other ally capitals...then cry and moan and observe helplessly for an hour while talking like cucks about "resistance" -> some cucks band together in a circle jerk to take on Unit X -> some non-cucks arrive and try to pvp, while the cucks stay in the rear -> Unit X leaves the city and laughs about it in Dalaran, while the non-cucks may or may not get a few kills here and there before dying themselves, and the large part of the group (cucks) jerk each other off about how they drove back the cowardly horde...and then go back to the AH.
EVERY. SINGLE. TIME.