So blacks should have been happy to remain second class citizens? I can't imagine living in a world where I was constantly was treated like I was a untouchable person who was unworthy of sharing the same facilities of the majority of the population. Maybe you want to go back to that time, but this black person does not.
See #179 ... or don't. I don't want you to feel like I'm making you a second-class citizen by suggesting anything to you, poor dear.
Your basic argument is that the Civil Rights Movement was unnecessary, that things and attitudes were changing due to Robinson and other events immediately after WWII. I don't believe you are taking into account the resistance to some of these changes. Robinson faced daily racial abuse from baseball fans both north and south. And your scenario that segregation would be resolved if all of the blacks moved north discounts racism in the north and the fact that it takes at least a little money to move, something that many blacks in the south did not have.