It's not just this country.
I just watched documentary about Juvenal prison in Russia. Warden talks about how some 20-30 years ago they may have had 3-4 murderers per a 100 girls, right now it is at least 50. Most of the interviewed girls were very proud of what they have done.
I have the theory, feel free to prove me wrong.
In the last 20-30 years Hollywood has promoted violence, sex, rape, sadism, murder, etc., thru the films they put out, more so than any previous times in the history of movie making. Same goes to computer games. It is violence, violence, violence.
Somebody posted a cruel joke. A person asks G-d, how is it possible that you allowed such violence in schools. G-d response by saying that he is not allowed in school anymore.
Sad, but true. Secularization of the society has not prove to be a positive change.