People without a penny to their name managed to migrate from across the sea to America. Ditto for people in the Eastern part of America, who moved West. Why couldn't blacks mass migrate to the North? To this day, the descendants of the freed slaves still live mostly in the South. Either they weren't treated that badly down here, or they knew they'd be treated exactly the same way by New Yorkers and Vermonters and, yes, Kansans.
There was no significant movement of blacks to the North until after WWI, when industrial jobs attracted poor blacks and whites both to some Northern areas. And what was one of the first things blacks did when they arrived in their new locale? It was to charge the local whites with "racism".
Ever hear of Brown vs. The Board of Education of Topeka, KANSAS?
In Detroit (which you once noted was part of the United States, though we might wish it wasn't), black kids grow up being told that the city was run by racists until blacks took the place over during the years 1968-1972, when the white population largely fled to escape black violence.
Well, I'll be the first to admit that any welcome the freed slaves received up North would not have been welcoming. But a major reason why they didn't leave wasn't the result of love and kindness on the part of Southern whites as much as Black Codes and other laws restricting their movement.
Ever hear of Brown vs. The Board of Education of Topeka, KANSAS?
I did, actually. In fact, I've gone further and read the decision. If you had done so, you would have discovered it was a combination of a number of cases, which is why the proper name is Brown v. Topeka Board of Education, et.al. The et.al. were schoolboards in Virginia, Delaware, South Carolina, and D.C. As it turns out, Topeka had taken steps to end segregation even before the Supreme Court handed down it's decision and by 1956 the entire district was integrated. Without demonstrations. Without the Klan. Without the governor proclaiming "Segregation forever." People here accepted it. Much the same happened in Delaware. The majority of the people in that state accepted the ruling and schools were integrated.
It was different in the other areas. Prince Edward County in Virginia, who was one of the defendants in the case, did away with the public school system rather than integrate it. In South Carolina, the minister who led the black families in the case in that county had his church burned and he was shot at. The people who filed the suit lost their jobs and couldn't find employment. The whites in the county abandoned the school system rather than attend with blacks.
So sure, I'll talk Brown v. Board of Ed with you. The entire case.