User blog comment:The Devil's Advocate WP/Weiss the Innocent Victim/@comment-16502426-20131106013655/@comment-918376-20131106025602

Well, if you think about it, Weiss isn't very sociable and friendly because she couldn't be. She's a "b*tch" (can't see how she is one, either ... probably because I've seen the biggest one in manga history so everyone pales in comparison) because she can't make friends. If she made friends with someone, *bam*. They're dead. She calls the White Fang members "criminally insane" because to her, that is what they are. They target people simply affiliated with the Schnee family, whether those people are innocent or not.

We also don't know how much she knows about her company's actions. She might not know a thing about it at all, besides the fact that they employ faunus -- if she even knows that. Or, she's been taught that they're treating the faunus kindly (as in, what they're doing to the faunus is better than what they "deserve") and any thoughts otherwise were forcefully overwritten. For example, when she was younger, perhaps she tried reasoning with her father when he came home angry ... only for him to treat her horribly as a result.

She's not blameless, as you said. But she's not "completely racist" -- her primary fault was in the fact that she used "White Fang" and "faunus" interchangeably, while probably simply meaning the White Fang. She accuses Sun Wukong of being a rapscallion because he did something criminal. Even if it's stowing away on a boat, it's still a criminal activity and Weiss, being order-obsessed, would be offended by that. We haven't seen her reaction to non-faunus criminals, as her opinion was tainted by the polices' opinion, so we don't know if she thinks similarly of ordinary criminals. She has beef mainly with the White Fang, and because of the White Fang, she simply distrusts other Faunus. She's not actively seen trying to kill them, and she doesn't seem to have any compunction with being around Faunus.

LONG STORY SHORT, I think we have to wait for more scenes of Weiss and (her reaction to) faunus before we can accurately judge her for it. Time will also tell if Blake is as sympathetic as people think she is. Both are guilty, and both are pretty "racist" (or prejudiced, or neither, depending on the view).