Blending in takes time. The government tried to force the issue. Sure segregation for segregations sake is wrong, but people segregate themselves. Birmingham had one section of Italians, one of Irish, one of English, one of Blacks. They didn't go into each others section of town. Crime was low in all of them. With busing, and forced desegrigation of schools, it became a white, black issue. Whites moved to the suburbs, blacks stayed in Birmingham. Now, Jefferson county is bankrupt, largest bankrupcy of a city in America. The white controlled areas have no such problems.
I think voluntary desegrigation should have taken place. Blacks who qualified and wanted a better education, should have been allowed to attend white colleges and universities, but don't drop the standards for them. Keep the standards the same. What's fair is fair. I also don't believe in affirmative action. Too many unqualified people in various possitions.
Blacks have had a harder time assimilating into mainstream American society because their IQ's are lower than Asians or Hispanics. Hate to say that, but it is true. They could improve their IQ's by education, but education is hard work, IF it isn't watered down, and standards are kept high.
An average white kid with at IQ of 100, with drive and ambition, can get a college degree. A white kid with an IQ of 140, but is lazy, will not achieve as much. Same with blacks.
The government is the problem, not the solution. Blacks by 1950 were being assimilated and about 50% of them were getting into the middle class. Most were married and had a father in the home. Free love fostered by the hippy movement, and the government stepping in to "help" unwed mothers, created a welfare monster, that wasn't there in 1960. Had things been left alone, but allowance for blacks to move into white neighborhoods if they could afford it, and go to white schools if they could afford it, slowly, things would have changed without all the strife, welfare, etc, hate, etc, that was created by the feds getting involved.