There are many different levels of drug dealing. The kingpins you hear about and see movies and TV series being centered on perform this drug dealing on an international scale. But most people who are accused of dealing drugs are just young people caught up in a complex world at a complicated time in their lives. They make the mistake of selling or possessing drugs, and as a result, their futures are ruined.
That system seems broken, does it not? Sure, small-time drug dealer deserve some form of punishment -- but not necessarily the felony-level consequences and mandatory minimums that many people face every day for possessing or distributing drugs.