![The Dial | Wikimedia](https://ifp.nyu.edu/wp-content/uploads/2023/10/1-3.png)
The Dial | Wikimedia
In 1938, Dr. Leopoldo Salazar Viniegra (above), head of the federal drug addiction hospital in Mexico City’s National Psychiatric Hospital, also known as La Castañeda, presented a paper, “The Myth of Marijuana,” that offered a radical path to ending one of Mexico’s first “drug wars.”