I'm quite an introverted person and overthink things. So articles like this, just make me worry even more. My brain goes through everything I could say to some. Striking up a conversation isn't easy for me anyway. Then I discount everything, in case it might sound a certain way, and I don't say anything. Then that looks like I'm racist to by not talking to someone who has different coloured skin to me. My point is, racism exists. I don't doubt that, but sometimes there are other reasons too.