What beaches do you go to? I currently live on Cape Cod and grew up in Boston, I have always been a stones throws away from a hundred beaches and have never seen a group of criminals at one of them.
Revere beach in the early 90s wasn't exactly an inviting place lol But I have heard it has been cleaned up pretty nice now. Not sure if it was criminals that made it uninviting or the human waste being dumped into the ocean though
People are getting a little testy about this beach carry it seems. I personally wouldn't carry at the beach because I Like to swim but bad things can happen at the beach.
I don't know how the beach is set up where the OP visits but the beach could include a boardwalk and various shops that may be far from where parking is.