Chaining themselves to vehicles is dumb. They won’t be able to dodge the rocks.
Tow the vehicle away with them chained to them anyway.
Let this pair stand in the 90+ degree Arizona sun, and sleep standing up for a couple of nights.
Serious. We let them play a game with us and let them win.
Many localities would have a judge who'd agree to letting the protester stand in his/her chain (the chained girl had the chain around her NECK and around the auto's DOOR POST, a VERY tight fit) Chick needs to pee? Go for it. Stand in your own pee.