PG functions like it's own self contained "city" for lack of a better description. The closer to the Bridge (Woodrow Wilson Bridge) there is less middle to upper class residency. There are areas in PG where there are literal millionaires such as Mitchellville, Woodmore Estates, Upper Marlboro - upper middle to very high income areas. For example black doctors, lawyers, high ranking government employees. Also include in that athletes - Redskins players, NBA players, etc. Then there's sections in PG that are more lower income such as Marlow Heights, Capitol Heights, and Landover. There's also sections in PG such as Greenbelt and Hyattsville that have a concentration of Hispanics and black together. Also the fact that Maryland and VA have a lot of HBCU's within the radius. When I think of PG, I'm not thinking high crime rate off top - I'm thinking isolated incidents. If you have a group of people that don't f with each other, clustered in the same area with lack of resources, then some shyt is going to pop off regardless of the location. Depends on your circle too - trust fund/rich kids, hang out with each other; middle class = middle class, but again, that's anywhere - parents who take their kids to piano and ballet lessons, paid afterschool sessions are not going to be the same parents letting their kids wild out on the weekend with nothing to do.
There's the usual shopping centers and town centers. Boulevard at Cap Center is nice from what I've seen at the time, from what I remember but I think it's on the decline. The area surrounding it is nice with modern style apts, condos, lofts that are more on the expensive side. But then as soon as you cross the line into Landover or District Heights you can visually tell the difference in the scenery and economics. The problem is once again, the result of capitalism and inequality - companies not wanting to invest in black neighborhoods regardless of how high income it is. But what sets PG apart from counties in other states, that you have to also consider, PG County is one of the richest black communities in the nation, But DMV is home to the top 5 richest counties in America, not just east, west or south- the entire USA. That's a lot of competition right next door from investors and community developers.