[globular-toast]

Where do you think it comes from? Elephants? Of course it's an inherent human feature.

[kazagistar]

Christmas isn't an inherent human feature.

[globular-toast]

No, but marking significant events and anniversaries seems to be. Speaking English isn't inherent, but speaking is. The specific kind of racism you're thinking about probably isn't, but people preferring and trusting people more like themselves is.