Also:
D&D 3.0 and 3.5 both are very clear in the PHB definitions of the various alignments that callous indifference to the welfare of others is EVIL. You need not have a malicious thought in your entire life to be solidly evil in D&D land.
~1/3 of the entire human population of the world is EVIL, it need not be a slavering monster, because slavering monsters are necessarily rare since mass murder being common in a race that lives in groups quickly results in the entire race being rare.