National Parks are not very safe when they are allowed to become over crowded with 130% visitation on average and few if any visitors are wearing masks. I have just been physically insuring they social distance from me by putting equipment, barricades or carts between us as well I have started fishing with a seven foot rod, casting side armed, hopefully they are smart enough to not get hooked! It is hard to show your displeasure of their actions with facial expressions while wearing a mask!