Firstly, it sounds like you live in some kind of particularly racist, backward area, so mileage will vary by location. I live in Northern Virginia, which is highly culturally and racially diverse, and I see or hear little to none of this stereotypically old-fashioned behavior you describe from white people - with the exception of when young males may be dressed like thugs and acting aggressively or loudly. Of course, this applies to the young males whether they are black, white, hispanic, asian or in a mixed group, and also applies to people avoiding them whether they are black, white, hispanic, or asian.
The neighborhood I live in itself is racially diverse. Our house is situated right between two black households, a hispanic household, close to us an elderly white woman, and a few doors down lives a mixed-race household. In the last generation or so, we've seen the demographics change from a mostly white city to larger groups of black families that have migrated from East St. Louis, which is notorious for it's poverty and crime.
The families that have migrated - from those who I've known - are looking for better opportunities and a safer neighborhood to raise their kids. But unfortunately there are people who just like past generations operated by "white flight", where white affluent households are migrating toward other towns further away from St. Louis.
So, our city has been seeing a demographics change, while my son goes to a school that looks different than what it did when I went to school there, from nearly all-white to a much more racially diverse school. And the middle school I attended when it was nearly all-white is now 75% black.
Conversely, if your friends are too afraid to go to the park and are restricting their own freedom, how exactly is that a privilege? It sounds like a self-created prison, not some kind of advantage.
The conversations stem from the belief that because East St. Louis is so heavily populated by blacks, and if black families from that city migrate to our city, that they will bring crime with them. My grandmother used to enjoy East St. Louis back in the day when it was an industrial and entertainment center of the area. Many people enjoyed it until black families began populating the city and white families began migrating away, fearing for their safety and the purity of their daughters (because apparently young black males were raping young white women everywhere).
It could be a demographics difference, it seems. The perspective carries with it a lot of turf wars and local districts having their own very strong and distinct identity. People around these parts are aware of how they segregate among each other, and race isn't just an avenue of segregation. When people in the St. Louis area ask where you went to school, they mean
high school. And it's because people are highly territorial down to identifying with local neighborhoods.
It's true, ymmv. Columbia is
them. Belleville is
us. East St. Louis is
them. University City is
them. Dogtown is
them. Kirkwood is
them. So, it might help explain the manifestation of racism in our part of the country.