Bigotry is a choice. We are not born racist, but many people are conditioned to be so from birth.
Actually, we ARE born racist. A trait which favors people more similar to you is self propagating. Please note that I'm not justifying racism - just pointing out that it's an evolutionary hangover, like many other aspects of our behavior. You might want to take a look at this: implicit.harvard.edu and maybe read this: http://www.newscientist.com/article/dn18761-stranger-danger-at-heart-of-racial-bias.html
This follows less than a month after a professor in Kolkatta was arrested for sending a caricature of Mamata Banerjee, the chief minister of West Bengal, through email. (http://www.hindustantimes.com/India-news/WestBengal/Professor-arrested-for-poking-fun-at-Mamata/Article1-839847.aspx)
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