Similar incident happened on one of the L.A. freeways a number of years ago. Dumb kids were throwing rocks off of a freeway bridge onto approaching cars, and one of the rocks went through a windshield and killed one of the individuals in the vehicle. The idiots were arrested and prosecuted but I can’t recall what penalties were administered.
Happened here as well in Atlanta, years ago. Two kids were throwing concrete blocks off an overpass and one went through the windshield of a car and killed a woman. They were prosecuted for murder, and I believe convicted.