The term "marijuana" wasn't used in the united states until the early 1900s, the media coined the term to describe the evil drug that turned its users into axe-murderers and made african americans insolent and coupled with their evil jazz music lured white women into sexual acts. Hardly anybody realized this evil "marijuana" was cannabis sativa, hemp, the same plant that grew on every roadside in America. Extracts and oils of this plant also happened to be one of the most common medicines in that time. Only the American Medical Association realized and opposed the marijuana tax act of 1937.
http://pdxnorml.org/AMA_opposes_1937.html

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