Answer:
Some people mistreat others that are not their skin color because that is not what they are used to. They also go off of stereotypes, because they refuse to get to know anyone by an opposite skin color. So, how would they know or face the fact that not all of that race is bad, if they refuse to see it? Some Caucasians believe in White-supremacy, and think that they are the first race to ever set foot in America. But, if were talking logically, African-American Tribes and groups where the first to ever set foot on American soil. They were pushed out of their own homes, without choice. Some Caucasians tend to make general assumptions about an entire race. That does not make sense, not only because assumptions are wrong, but because a certain percentage of a race is not every individual that is that race. You have to have valid reason, which many Caucasians lack having. Maybe they were raised to hate mexicans, per say. And, they chose to continue that. They have no valid reasoning themselves as to why they are disrespecting that entire race, making general assumptions.
Some people are still racist because they have been raised that way, or have been wronged by an individual of that race, and now hold a grudge against an entire group of perfectly normal, civilized, humans, just like themselves.
Explanation: Hope this helps..