They were a man and his 11-year-old son who drove all the way from Missouri to do that stunt. The man got his wrist slapped, being sentenced to three days in jail and a $60 fine. I don't think the kid was punished.
Trying to remember why they would want to do this. Vietnam was over…. Don’t think we had anything going internationally. I guess we always have America haters around no matter what is going on.
I don’t know how accurate, but this is fascinating:
https://billstaples.blogspot.com/2020/07/baseball-and-burning-american-flag.html