1. For the African american group, they have been called very bad racial slurs and treated poorly. That was until the government passed the equal rights law.
2.For the Mexican group, they were also treated harshly and a law of equal rights has also been passed for this group as well.
3.Last, the Native american group, they were forced off their land and put on reservations forcibly. Along came the Dawes act and the problem was solved.
Hope this helps and my bad if i repeated a couple of things.
