New York City Slums In The 1880s - Best of Web Shrine
This might be instructive. And the slums of NYC have had many nationalities in them. African-Americans and other people of color though face the problem of judging someone at first glance rather than getting to know them as an individual.
Donald Trump has kicked the beast of racism repeatedly in his campaign to gather votes. He has little experience like President Barack Obama and his First Lady with dealing with racism first hand unless he is the person showing the bigotry and over simplifying thinking.