How about this: they have to go and meet with the families of those missing in action who have suffered for up to 50 years not knowing what happened to their fathers, husbands, brothers, and sons and explain just what the hell they were thinking when they “tagged” that memorial. I doubt they will be able to truly justify their actions.
If they have any feelings, if they are sentient beings, they should feel profound shame at their actions. Perhaps this will get their lives turned into something productive.
I was lucky. My father came home from the Republic of Vietnam. Twice. Though he wasn’t in combat, his name could have been up on that wall or the one in Washington, DC. As I said, I was lucky unlike the families of those men listed on that wall in Venice, California.