Since they're both socially constructed cattle brands for humans, it's because your society has deemed it so. Rationally, both suck, but the latter is more understandable because it is a reaction to the former. Also, it's kind of silly to harbor pride about an accident of birth that doesn't really give you any advantages over others. Since African and dark brown Americans are maybe around 10% of the population, it barely gives you any social advantage to be of European ancestry. It's just a game the government plays with your head to make you feel better about being broke. It gives you a false sense of power.
Caption this Meme 