Maybe not where you're at but in other countries they kill each other in the name of racial purity.
Sure, but the question was "why do *we* live in such a racist society." I, for one, don't, and I'm pretty sure that most people on here live in developed countries that aren't full of racial hatred either. Perhaps I'm wrong. Either way, there was an assumption made in that question that isn't true for me, and thus (for me at least) it's an invalid question as it stands.
If the question is "why do you believe racial hatred is still predominant in a select few societies", then fair enough - but that's a completely different question.