So upset, hard to let go

Sorry to vent but I have been struggling this week. My son has been in cub scouts/ boy scouts for now 7 years. My husband took him on a camping trip with the troop last weekend and when my husband left to go to the bathroom the scout masters son started punching my son in the face. My son is a few years younger than him and did not know why it happened. We discover later that a girl at school, who has a brother in scouts told her brothers my son hit her. When I ask my son about it he said that between bells the halls get congested and he bumped into her. So the 2 brothers meet with some other scouts and planned to beat my son up. Then we find out the Grandfather (one of the leaders in the troop) knew about the plans and told the boys not to do it but did not tell anyone else, follow up, go on the trip or advise us there was even an issue. So my son who is all of 13, who has never been in a fight in his life gets blind sided at camp. Then the Grandfather has the balls to tell my husband well don't let your son quit the troop for this it will make him look weak. WHAT? Why would I keep him in a troop that the leader's son attacks people, other boys conspire and plan an attack, one of the leaders knows of the impending attack and does nothing and then last week at the scout meeting, when I went to help put up chairs and clean someone went in my pocketbook and stole all of the cash out of it. UGHHH! These events happened on Saturday but the more I think about it the madder I get. My son who I teach to believe in the good in people now wants to take fighting lessons. My son does not want to be a victim of violence again. And this happened in boy scouts. I am sooo upset I do not know what to do. Part of me wants to file criminal charges against the boys but do I really want to ruin their records. While those boys become eagle scouts my son has now quit. I was a den leader in cub scouts for 4 years and now my son is so against scouts there is no coming back. So these boys will get scholarships and great opportunities for becoming eagle scouts in a few years while my son quit because of their actions. As a Mom I want to go punch some kids and parents for touching my child. I go to church and am a christian and know I should forgive and move one but this week I am REALLY struggling with this issue.