You took the words right out of my mouth. They should have a checkpoint on 301. If you have an address anywhere in DC or any "Heights" part of PG, you won't be allowed through.
I live a few streets down. Ever since they built those low income section 8 townhomes there a few years ago there's been a rise in that type of activity in the neighborhood. A shame really as our neighborhood has beach access to a semi private residents only beach. I don't let the wife take our daughter on afternoon walks on the beach anymore unless I come along.
Seriously time to build that fence...