Is racism contagious?

I could normalise the idea of different races, but sometimes for instance if I am watching some celebrity who is black, or hanging around with a black friend. some close people to me of my race would point out to me their blackness very frequently, no matter what is the essence, their skin color will be the first notion, either in "a funny way" or actually mean way.

And I am not very unracist, sure I have my flows but I want to be comfortable at ignoring the racial barrier of others. No matter how naive or stupid that looks like.

Some people will come whisper you racist stuff, just so you can accept that and laugh it off, so they come clean. and you become the racist.
Is racism contagious?
Is racism contagious?
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