You are suggesting that draconian actions against drugs, homelessness and crime are causes for people associating with their own class and prejudicing other cla

You are suggesting that draconian actions against drugs, homelessness and crime are causes for people associating with their own class and prejudicing other classes. I suspect it's the other way around; we are prejudiced to favor our own kind across many metrics and the consequence of that prejudice is homelessness, crime, poverty etc... I say this because the kind of prejudice you point out is rampant across all societies, not just America and if anything, America handles it a lot better than any other society.