Seen this coming a long time ago, most Hispanics are Catholic and the number of Black Muslims has gone sky high. Mix in the Black Christians behind a rock and a hard place.
Competition for jobs, the drug trade and street control will get worse. My theory is both sides look at the thriving China Towns and feel they also need to have section of the city for themselves.
Human nature to want to associate with like people, live amongst ones own family. Fear of identity is strong, fear of the children cross breeding in another faith or culture and having the Grand Children abandon the old culture they follow and hold another culture in higher esteem then theirs.
Just my take on this.