are christians supposed to be racist??

me, i am not a christian, but the ones i know are always passing silly comments about me because of my colour and the fact that i dont accept jesus or anything christian for that matter.
there are plenty of christian websites on the interent which say that all religions apart from christianity are false and worship satan. they kind of mock these religions in a way because these religions were the first to ever be founded, such as hinduism
i dont know if this is the right place to ask this question, cause everyone is so peaceful and loving here.. but i just wanted to know if christians are supposed to be this way or is it just the many upon many i know