- Marijuana was made illegal in the 1930s largely due to racism, as it was associated with Mexican immigrants and black jazz musicians. Politicians at the time made explicitly racist statements about marijuana.
- Over time, different groups such as communists and hippies became associated with marijuana use and were targeted. However, racism was a major original factor in criminalizing it.
- Marijuana prohibition has failed to curb drug use and has created unintended harms. Legalizing marijuana could reduce the harms of prohibition while distinguishing it from more dangerous drugs. Treating marijuana differently than other illegal drugs may also increase trust in government.