Well it looks like WOW isn’t impervious to hacks and cheats. Some hackers used an insta-kill exploit that allowed them to commit mass genocide in Ogrimmar and Stormwind, killing players and NPCs alike. Blizzard hotfixed the issue on the same day so we shouldn’t see this again.
Here’s a video posted by “bornincrimson” capturing the chaos as it unfolded in Stormwind:
I’m sorry to say it but this is the most exciting thing I’ve seen on World of Warcraft in a while. The GM’s should have flagged the hackers as PVP and allowed the wronged players to exact their revenge.