Well a couple have already said it, but I'll put it a different way. If you don't watch this clown, then he won't offend you. In the old days a husband, brother, father, son, or some other relative would have already beat hell out of Letterman, or one of the others, and the rest would know to keep their mouths shut.
My 67 year old GREAT GRAND FATHER, beat hell out of a 26 year old on the town square on a Saturday morning for insulting one of his daughters. My Grand Father, and Father watched to see that no one interfered. The 26 year old learned a lesson about his mouth, AND old men. No one blamed my Great Grandfather, and no one tried to stop it.