I don’t see that happening. The Latinos are replacing the blacks. And the Latinos in LA come from just about every country between the Rio Grande and Cape Horn.
LA is too divided, it looks like the U.N. based in Mexico with everyone from everywhere in between... No one can can even communicate without an interpreter...
Most the blacks left the west coast 15+ years ago, most went back east, south, and northeast...They took the last train to Georgia...