I'm not so sure that the emnity between black Americans and Latinos is universal.There is a notorious high school in my hometown that was the scene of some vicious battles between black and brown in the late Nineties.Now you go out there and there is almost no tension whatsoever-lots of"mixed"friendships,etc.The school is now about a fifty-fifty mix from being almost all black in the Seventies and Eighties.If trends continue the school will be mostly Mexican within five years or less.
Either way,the school is at the nadir as far as test scores,graduation rates and college admissions go.All the blacks and many of the Mexicans who could afford to leave are out of there and what is left are the very poor,most of whom are actually very good kids on a personal level but the dysfuction of the community at large cripples any progress they might want to make academically.
The vast majority of crime here is black on black and Latino on Latino.Whites are virtually irrelevant to the situation.
In any serious prison there is a virtual state of war between pretos and canales.
Prison is a sweet barometer to see how well social engineering really works when no one is watching and making folks adhere.
It's ugly.
Latino students continue to have the highest dropout rates of any ethnic group. So, all the public money spent on their education becomes wasted.