I can't speak for all of Pennsylvania, but there are large swaths of Philadelphia that have no white people living there.
In fact, if you give me a neighborhood, I can tell you with 95%+ accuracy the race or ethnicity of who lives there.
Unfortunately, there are very few majority black or latino neighborhoods that aren't riddled with crime.
That may make you feel sad, but it's reality.
I've been there. To be honest, last time I was in Pennsylvania, I was stunned how dilapidated, old, cold and gloomy the cities in that place were. Much of Philadelphia appears as though it was just abandoned. All big cities have their bad areas, but Philly was downright scary.
In in comparison, much of LA is a new, shinning city on the hill.
Want to see some staggering stats? Look at the crime stats of Philly...Philadelphia has about *double* the murder rate per capita, than LA.
No matter how ya chop it up, that's scary.