I would add most of Prince Georges County and Waldorf to that list.
I didn't know Waldork had gone bad but DITTO to PG, absolutely!!!!!
Waldorf isn't nearly as bad as most of PG County but it's no longer the town it was 20 years ago.
Are you from this area? Seriously, 85% of DC is perfectly fine, with gorgeous neighborhoods, I lived in one of them for 12 years. Baltimore is a great city, and there are millionaires living in PG county. Where are you getting your facts? Or are you living holed up in Potomac somewhere, fearful of venturing out, sending the maid to gather canned victuals from 7-11?