I'm not sure how true that may be for the Black/PR relationship in NYC. But if so then fine.
But I can tell you from living the majority of my life in Philly that PR's are some of the most openly racist people. And I am referring to the everyday local round the way P.rican flacco ass dude, too.
My first and also worse cases of blatant racism have always come from PR's growing up. Yes, you have the ones that are cool. But by far there are more who hate Black people and it disgusts me seeing as how they do nothing but emulate us, even going so far as referring to each other as "nikka".
I've been locked up in Pa. Any Black male that has can tell you how real the PR racism is towards Blacks and if he denies it it's because he thinks they're "cool" and wants to c00n for them.
*edit, got so wrapped up in reminiscing on racism I forgot to mention that I've always wondered about the PR/Mexican relationship. The PR's in Pa. talk pure shyt about them, yet, there aren't many Mexicans in PA either, so it's not a good gauge as to their relationship. I can never think of a city where the two co exist, either. Every city I can think of either has mostly one group or the other. I've always wondered what it would be like in a city where they were equal in numbers..