FACT: Alliance are the more toxic faction
There's no point in disputing, it's just simply a fact. 24 hours a day, 7 days a week, the Alliance get together in BANDS and strafe through low level zones, annihilating all horde and killing all quest givers so they can't level up.
Need a comparison?
Go to hellfire peninsula and visit honor hold. The place is clean as a whistle. Go to Thrallmar however and you'll find the streets literally pathed with the bones of hundreds of slain horde players.
As this post is being written, there is a group of SIX alliance guildies sitting at Nesingwary Base Camp in sholazar, doing nothing but sitting ontop of the tents, exterminating any player that arrives. I logged in today at 10:00 am trying to quest in sholazar and they were there so I decided to check back in later. Here I am at 8:00 pm, and they are STILL THERE, piling up a mountain of corpses.
I'm not saying that horde don't grief, gank, or raid alliance cities. I am aware of this. What the horde does not do however, is do this daily AROUND THE CLOCK.
The alliance raid orgrimmar DAILY. Seeing dead auctioneers in Org is no random occurrence, it's just something the horde has to get used to.
So what caused this infestation of toxic alliance maggots? Simple. Human racial. Free PvP trinket. Anyone interesting in competitive pvp obviously goes alliance. As experience has shown, the best players happen to be the most toxic and the best players all went alliance.