Why?

I think stereotypes are so widely known throughout our country due to its past. Mainly because of the slavery that we as a country had. For so long, whites were looked upon as a "supreme race" as every other race was seriously looked down on. Since, the whites looked at everyone as a lower level, they began giving the other races names because of their hatred to anyone who was not white, and classifying them a horrid things (that's obviously weren't necessarily true to the race as a whole). That seed had been planted and never really stopped growing causing these bad traits of the other races to been so known and said often.