I'm not sure, if Wow is only game, that has faction-based PVP, not "team vs team" one. But at least, it's only game I know. But don't you think, that it's bad, when PVP-based story in game teaches players (including children, who are easier to be influenced) to hate other players, just because "You're orc and he is human"? It's real humans, who sit behind other faction's character. Same, as me. Why should I hate them? Doesn't it lead to virtual racism, that can turn into real one then? Why it's still allowed?
I always hated PVP-retaled stuff in this game exactly because it makes me hate other players for virtual reasons and I don't want to hate anybody.
And I just think, that it looks weird and sounds like hypocrisy, when some people say, that they're against racism, but at the same play or make racist game.
P.S. I'm personally PVE player, who plays both Alliance and Horde. So, I'm not racist. It's game, that tries to push racist stuff (especially in PVP-based xpack, like MOP and BFA) on me and I hate it.