" If a country supports prohibition, it is also guaranteeing that on the supply side all profits will accrue to underground networks; and on the demand side it is guaranteeing that any social or public health problems associated with drug taking will in the great majority of cases only come to light once they are out of control. If the UN is right and drugs account for 70 percent of organized criminal activity, then the legalization of drugs would administer by far the deadliest blow possible against transnational organized criminal networks. "
― Misha Glenny , McMafia: A Journey Through the Global Criminal Underworld