To me the legal aspects of this incident are largely irrelevant. Youth soccer should take care of its own business regardless of what the PD does. If you don't regulate your own activities there could be a municipality or gov't agency that will. I don't think any of us want metal detectors and clear bags at soccer tournaments.
I agree. That is why the interested parties need to recognize this as something different and act before other authorities decide to act. As I said, angry, motivated people are not quickly dissuaded by deflection. The best solutions will come from reasonable soccer people who are willing to acknowledge a serious problem, take ownership of their role in it and have the will to address it. The problem is widespread, but it is not complicated. Few kids insist on heading the ball when younger than the rules allow because they disagree with the rule. And this is because there are foreseeable and immediate consequences sufficient to deter the conduct. If the headed goal was counted, but the player got a warning...well, who thinks that would work? Enforced rules work all over our society. Not perfect and not always, but that is hardly a basis to throw up one's hands and say nothing can be done. Codes of conduct need to be enforced and violators - clubs, coaches, parents, players - need consequences that are sufficient to deter others.