I think you're very confused if you think other minorities faced anything like what blacks faced. Combined this with the well-known fact that most recent non-Mexican immigrants to America (after 1960) were often quite wealthy before they came to America and you're looking at a very different experience.
For the record I have family members living on reservations. Go back a little over a century ago, and natives were hunted for sport, like game animals. It was only 40 years ago that the USA officially discontinued policies of forcibly removing children from their homes and putting them into schools where they were mistreated. I personally know people who were beaten as children for speaking in their native language. Abuse and prejudice remain facts of daily life.
