All those behaviors you mentioned seem pretty horrible to me. Just screaming out the window is not mentchlech and becoming of a yeshiva child. Making fun of someone who looks or is different (litvish as opposed to chassidish, heavy, thin, etc) reflects, in my opinion, the intolerance that pervades our community at large. If we can tolerate throwing rocks or yelling obscenities at those who are different, how can we actually expect our kids to be different. They don’t see us or hear us??
How do we act towards our spouses?
I’ve heard of pretty awful bullying in schools and camps, chutzpah towards teachers, etc..
How should this be dealt with??? Discipline and our chinuch system are not making a long term impact.