The most constructive way to reduce crime is education. An educated scholar most l Iikely is employed.
Consequently, they won't commit any crime. Parents play a fundamental role in nourishing a child as well. They should give proper insight about crime in childhood itself because "prevention is better than cure".
However, the administration/government should have strict rules over every crime. Following this, the judiciary should make effective decisions.
Corruption should be decline, so that the local police will sentence criminals to prison.
The politician should not interfere in the laws to give bail to them.