Generally speaking, it seems that Negroes have never wanted integration.
It's a characteristic of all humans. Emperors and conquerors build large countries from hundreds of nations. After a while those countries fall apart, as each nation wants to go its own way.
Separatism thrives because it is profitable. Instead of being a local boss you could become a king, with your own court and your own army! Those poor fools will gladly accept your speeches that all their problems are caused by $evil_neighbors, and those problems will disappear as soon as you draw a border on a map.
We all know what black leaders benefit from this situation. But it also benefits the current way of life of [some of] black population. They have self-segregated to such extent that reintegration is a challenge for a few generations. As a mini-society they cannot exist anymore without tacit support of their way of life. When that support weakens riots explode - and politicians from the very top are dropping on their knees, begging forgiveness for asking the blacks to behave. This courtesy is never extended to other social groups - perhaps because those are not likely to set the town on fire. So we have strength on one hand, and benefits that that strength buys. What is there for them not to like?