crimes, which commit young people. - przestępstwa, które popelniaja młodych ludzi.
It is ASSOCIATED with the fact that TODAY'S young people have more free time. Therefore also minors often wander on the streets in SEARCH OF some entertainment. Implementing the/A? curfew could limit it. However such a solution would CERTAINLY have both advantages AND disadvantages. I try to prove MY POINT BELOW.
confidently = w pewny siebie sposób