typically organized into multiple cells functioning in major metropolitan areas. Domestically, retail level sales are conducted by a wide variety of criminal groups. These sellers are often organized along regional, cultural, and ethnic lines that facilitate internal security while serving a demand for drugs that permeates every part of our society. Gangs -- including the Crips, Bloods, and Dominican gangs as well as Jamaican "posses"-- are primarily responsible for widespread cocaine and crack-related violence. The migration of gang members and "posses" to smaller U.S. cities and rural areas has caused an increase in drug-related homicides, armed robberies, and assaults in those areas. According to the National Narcotics Intelligence Consumers Committee (NNICC) Report, the price and availability of cocaine in the United States remain relatively stable. In 1995, cocaine prices ranged nationally from $10,500 to $36,000 per kilogram. The average purity of cocaine at the gram, ounce, and kilogram level also remains high. Purity of the gram (retail level) in 1995 was approximately 61 percent while purity per kilogram (wholesale) was 83 percent.55 Heroin Availability. Heroin continues to be readily available in many cities. Nationally, in 1995 wholesale prices ranged from $50,000 to $260,000 per kilogram. This wide range reflected such variables as buyer-seller relationship, quantity purchased, frequency of delivery, and transportation costs. Data obtained from DEA’s Domestic Monitor Program, a retail heroin purchase program, indicates that high-purity Southeast Asian heroin dominates the U.S. market. However, the availability of South American heroin has increased steadily, reflecting the fact that Colombian traffickers have gained a foothold in the U.S. heroin market.56 The NNICC Report also reveals that heroin purity levels have risen considerably. In 1995, the average purity for retail heroin from all sources was 39.7 percent nati...