He thinks the numbers of homicides can be kept down if police concentrate on what he calls "negative street behavior," which includes drug dealing, street robberies, prostitution, gambling and public drunkenness.
Police often concentrate patrols in poor neighbourhoods with high crime rates and street-corner drug dealing.
Some school systems that once associated cellphones with drug dealing and banned them from campuses are reviewing their policies.
The graffiti on the walls have been replaced with neighbourhood watch signs and the corridors and walkways are now free of drug dealing.
Drug dealing, money laundering and theft are made easier by using cloned telephones.
If they have a male role model, it is somebody involved in crime or drug dealing on the streets.
There are offences, such as those involving drug dealing, which do not sit easily within that definition but which can cause considerable harm.
Are fluctuations in delinquent activities related to the onset and offset in juvenile illegal drug use and drug dealing?