Lots of useless arguments, specially about which race did what.
The Thread is not about which Race is Worse is about which FACTION is worst.So the sins that should be counted are those that were made while each race where in its respective Faction.
"The draenei destroyed countless worlds fleeing from the Legion"-The DRAENEI were not in the Alliance.So it does not count.
"Arthas purged Stratholme"-He was a member of the Alliance.So it counts.
"The Orcs were under the influence of the Legion."-Influence or not, the Horde did it.