Are national parks being trashed to protest government shutdown?

Hostage-taking is one way of getting your demands met. So if you want to get the federal government back open, why not take national parks hostage by trashing them?

National parks and monuments are probably the most beloved aspect of the federal government. Many people dislike many aspects of the government, but who doesn't love national parks and monuments?

The people trashing them, apparently. But once the trash gets picked up and all the overflowing feces composts away, the parks will regain their natural beauty. So, knowing that, what would stop government-shutdown opponents from trashing them to garner public support for ending the shutdown?

Some people probably don't mind the tactic of hostage-taking. They might see it as a legitimate method for stimulating fiscal transfers that are overdue anyway. Others dislike it as a tactic, whether it involves people or land or whatever. So the question is how to respond to this national park abuse during shutdowns, if you're against them being used as hostages.

Should they be put under an independent managerial authority immune from government shutdowns? What about placing cameras along roads into the parks and billing people who drive into the parks during a shutdown? Of course you would have to wait until the government re-opens to review the camera footage and process the billing, but the threat would deter people from trashing the parks.