Try to imagine what other ethnic groups have faced in the United States. Racists fought a "civil" war against the United States in order to keep their slaves, and some of them have still not given up their hatred of everyone else on Earth. Racists were so small-minded that they were willing to kill and die by the hundreds of thousands to keep black people as property. And it took over 100 years from the end of slavery until stupid southern Confederate racists would allow black people to vote or use public drinking fountains.
Perhaps if the stupid southern white trash Confederate racists in the neo-Confederate red states weren't so racist, then perhaps other ethnic groups wouldn't feel the need to "stick to their own kind" so much.
The simple fact is that white people can't play the victim in American history.
White people never had to walk to school through a gauntlet of police dogs, fire hoses, and people who hate you for existing. That wasn't that long ago when you really think about it. It wasn't some ancient bygone era. We had photography.