Things like racism, I put them into a similar category to religious conflict. Both are these things, that are completely unnecessary, to reasonable people. If people become more reasonable, you'll see a change. I'm not sure if it boils down to upbringing / education, when you are a grown-up, you should be mature enough to realise what "isn't nice". If you stopped, and thought with a conscious mind for 5 minutes, anyone can realise "the reasonable", it's a willingness...a combination of being reasonable, and simply being "nicer"...both attainable values (my 2 cents)