Based on the happenings in my area. Town or village. Almost everyday there is anti-social behaviour, street violence and what looks like "gang-activity" about drugs alcohol robbery and burglary etc.
Setting fires in wheelie bins is also pretty common.
The numbers involved are small. In our village perhaps about only 6-10 known troublemakers. Not much gets done to curb them or stop them. Very little can be done, it seems.