I live 45 minutes from MT Rainer and this story is a load of BS. I have seen black people there.
Last weekend I was at the beach on the coast and saw confederate flags on trucks at the beach and I also saw black people there celebrating too.
The common element that I do notice when I see black people in these elements is that there is usually a father involved.
This is politically driven race hustling as per usual.
I notice exactly the same thing here in the rural parks and historical sites here in Pennsylvania. I also observe that said demographic behaves in a civilized manner no different from the rest of us.