NYC is self segregated by neighborhoods, people like to be amongst those from the same ethnicity and culture. There are many areas where you can never encounter someone from a different ethnicity if you choose to. That being said John Gotti was a huge racist and used to mock Willie Boy Johnson for being American Indian, calling him half-breed. Willie Boy resented this and it played a part in his decision to becoming an informer. John might have invited a Black or Puerto Rican over for a barbecue, maybe. But you weren't gonna find a moulignon at no baptisms, communions, confirmations, weddings or family functions. For example, South Ozone Park is right next to Howard Beach where in 1986 Michael Griffith, a young Black man, was set upon by local neighborhood youths, and chased onto the Belt Pkwy where he was struck and killed by a passing motorist.