I've seen some interesting arguments here coming from the Horde sympathizers. I read an argument that
Night Elves Highborne are the most evil race of all, causing the most damage to everything because of the War of the Ancients they caused 10,000 years ago. I feel like this is the Warcraft version of "THANKS OBAMA!" as the Horde sympathizers continue to reach for straws regarding Alliance vs Horde morality comparisons. Blood Elves and Nightborne are also Highborne. So um... well this is awkward -- do I engage in that leap of mental gymnastics and blame the Horde for that too, like the Alliance somehow got blamed for? Nah, Horde are evil enough by their own merits, that won't be necessary.
Also, the Alliance is for some odd reason, consistently blamed for the actions of the "last general" of Laurderon, Garithos's actions against the Blood Elves. Garithos is Laurderon. Laurderon is Horde. Anything Laurderon did, is a Horde issue since Laurderon is Horde. Imagine all the Forsaken the Blood Elves regularly interact with that helped slaughter them in WC3. Damn that Alliance, though!
The Blood Elves left the Alliance because of Laurderon and the slaughter they narrowly escaped because of Laurderon, only to join Laurderon and their slaughterers in Burning Crusade. Logic.
Anyhow, this: