RIP. Horrendous thing to have happened, and his son being there as well.
I remember going to see my little brother play quite a few years back - he must have been about 14. Parents and even the coaches were shouting some terrible things at the kids, coaches were arguing and nearly ended up in a punch up because one of the opposition players was being slightly over the top in his tackles. What sort of example is it to the kids when even the coaches and their parents can't behave?