I think that @
2Quik4UHoes may remember this, or maybe not, but Arlington, VA was an exercise in gentrification, almost like an experiment, before DC. You had scattered pockets of black communities in Alexandria and Arlington (Green Valley being most popular in Arlington) but also a heavy hispanic population coming into the late 80's and 90's. Once the potential was realized for the area, that rent went up and redevelopment kicked it, that was it, the white washing of NoVA began.
With that being said, NoVA is rather culturally mixed, white dominant, however there is a cultural hodge podge in the Arlington, Alexandria and Falls Church areas.
I'm in Falls Church and I see this a lot.