Your implicit assertion that hating other ethnicities is a necessary condition for meriting the label "racist" is not universally accepted.
Considering what a horrible can of worms the definition of that word is and that "racist" represents a strong political and debating weapon against any enemy, I think society would be much helped to adopt a rationalist taboo on it. Even LessWrong discussions would be improved by this I think.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.