The real demise is rap& gang culture along with the sexual freedom which has pushed for the pornification of society.
Parents not caring for the right ubringing of their kids is at fault as well. The kids with the blessing of psychologists never learned the word No and have no "fear"(For the lack of better word) of their parents or their teachers. Any kind of punishment is seen abusive and as for school,the teachers are with tied arms because, if they were to punish their pupils for their actions,the parent would come in storming and protect their child instead of letting them take punishment and learn rto be responsible for their actions