A drug dealer is an individual who sells illegal substances, such as cocaine, heroin, or marijuana, for profit. These substances are often classified as controlled drugs due to their potential for abuse and addiction. Drug dealers may operate independently or as part of larger criminal organizations, and their activities can contribute to various social and legal issues. The role of a drug dealer can vary widely, from street-level sales to more sophisticated operations involving distribution networks. Law enforcement agencies work to combat drug trafficking through various strategies, including undercover operations and community outreach programs aimed at prevention and education.