Although the situation in the movie is a bit extereme, things like this happen every single day. Most of the time, if you are under the age of 21, you recieve no respect. You said that the authority in this movie never listened to the kids, that recieved a "label" before they were even out of high school. To an extent, that is also true. Who would a police officer believe, a 15 year old such as myself, or an older person? Place your bets on the older person, even if they aren't telling the truth. This happened to one of my friends. She got in a car accident that was the fault of an older person, and she was still found liable. I guess the saying "darn teenage drivers" was penned by the police officers of our district. As I said before, things aren't as bad as they are in the movie, but these things do happen to an extent. Just another fact of life.
"We are all in the gutter, but some of us are looking at the stars." -Oscar Wilde
"The robbed that smiles steals something from the thief" -Shakespea