Unfortunate that the father was not packing heat. Putting a couple of rounds (or 6) into that dirt bag perp is the sentence he deserves for ruining so many lives.
A guy did that while the news cameras rolled in Baton Rouge some years ago. (Looked it up - 1984). 5 years probation.
https://www.youtube.com/watch?v=Oi3Hyxuf5AE
Impossible is more like it. Have you ever been to court? You’d be lucky to get an oversized belt buckle through the security screening.