They need to be killed as an example. But where their blood won’t ruin the paintings.
i would strip them down and glue their junk to the wall just to see how commited they really are.
I agree, these crimes need to be harshly dealt with. These are crimes that strike at the heart of our heritage and way of life. These are not petty crimes like shoplifting. This is terrorism.
Strip them naked, turn off the lights, kill the heating, lock the doors check on them in 72 hours.
Wait until they do a Jackson Pollock painting, it would be an improvement.