Kids imitate what they see and hear. Also, look at most of the films booked at a black neighborhood theater. So, when you get a movie like The Best Man that is nonviolent, those rowdy habits within that same theater house cannot drop at a snap of a finger. Some of us can't watch a serious film with quiet moments without getting uncomfortable by laughing out loud. That is due to reality hitting sensitive spots and finding ways to distract.
Ushers are inside the theater themselves standing at the doors being loud.
Ushers are to report problems if unable to handle it. Management is suppose to warn or take them out. They have that right. Even security guards at a few theater house are from the cheapest security companies the theater chain are contracted with in THAT neighborhood. There's not much diversity in the movies booked in our community as much as the movies being made to satisfy all tastes.