Anecdotal but I've lived in different Asian countries for the last 15 years and my experience is that expats who live in compounds geared toward their nationality, never eat local food and never bothered to learn the local language tend to also be very racist. You'll hear them non-stop complaining about the locals or making sarcastic comments about them, about them having no manners, not speaking English properly (ironic considering) etc...

And often enough, they'll say things like, "you know how Chinese/Malaysians/... are" as if that statement actually made sense...

I've even heard one express profound admiration for a British family that had been involved in the Opium war and had been in HK for a long time. He admired them for staying "pure" despite staying so long in HK...

It's really anecdotal but I've rarely seen a more toxic and racist culture than the Western expat communities in countries I've lived in...