I worked in a Middle School for 23 years and though it's an age I actually loved working with, we definitely had behavior issues with some. Some things are simply "uncalled for" and deserve action.
I remember, for instance, one young man was very angry after coming out of the Assistant Principal's office for discipline issue. He stormed out of the office saying "he didn't give a F and kicked the flag (on a stand on the floor) over. Needless to say he went right into the Principal's office.

Those kinds of things, like the bad rude attitude toward that poor lady on the bus I think are totally unnecessary and I always wonder what kind of home life these kids have (NOT to excuse their behavior).
TIS