If the reason these boys are all engaged in these protests is because it is bein hazmanim, I have two suggestions.
1) Either cut short bein hazmanim. Clearly the time is not being spent productively. The elementary schools have all resumed so let the older grades also keep the same schedule.
2) Teenage boys need action and physical activity like sports. Maybe if their yeshivas actually allowed them to play soccer, they would all be on the field instead of in the streets. At least once a month there’s another mini hafgana in these neighborhoods in yerushalayim. I’ve spoken to multiple parents whose kids participate in the protests because they either “think it’s fun” or they “think it’s funny”. Of the parents I’ve proven to, their kids definitely don’t care about the cause. Maybe it’s time the Israeli yeshivas installed basketball hoops and they stopped these chillulei Hashem.