Why are light skin, Indian people often super racist towards dark skin people (especially blacks)?

Why are light skin, Indian people often super racist towards dark skin people (especially blacks)?

I've notice this pattern with Indian people. The ones who are brown or dark skin are cool with blacks but the really light skin ones often look down and are super racist towards blacks. Now, they aren't openly racist and use the N word to your face, but there is a smug attitude of "I'm better and more intelligent than you because I'm light skin" that you can pick up on interacting with them.

Why is it white people can be more civil/less racist towards blacks but light, skin Indian people still hold racism in their heart despite being more coloured than a white person?

Why are light skin, Indian people often super racist towards dark skin people (especially blacks)?
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