Prohibition Era1910s-1930s
Mexican Immigration & the Racial Roots of Marijuana Prohibition
How anti-Mexican racism fueled America's first marijuana laws — from the Mexican Revolution to state prohibition campaigns and the deliberate use of the word 'marijuana.'
1910s-1930s
Time Period
Historical era
4
Key Figures
Historical actors
6
Sections
In-depth coverage
3
FAQs
Common questions
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Overview
The story of American cannabis prohibition is inseparable from the story of anti-Mexican racism. Following the Mexican Revolution of 1910, waves of Mexican immigrants arrived in the American Southwest, bringing with them the practice of smoking cannabis recreationally — a custom unfamiliar to most Anglo-Americans, who knew the plant primarily as a pharmaceutical ingredient or industrial fiber.
Local and state governments responded not with regulation but with racialized fear campaigns. Politicians and newspapers characterized marijuana as a dangerous drug that made Mexican and Black users violent and criminal. The very word 'marijuana' was strategically deployed to associate the plant with Mexican culture and distance it from the familiar 'cannabis' found in American medicine cabinets.
By 1931, twenty-nine states had banned marijuana, with virtually every prohibition campaign explicitly invoking racial anxieties. These early laws established the template of racialized drug enforcement that would persist for nearly a century, with communities of color bearing the disproportionate burden of cannabis criminalization long after the overtly racist rhetoric faded from public discourse.
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The Mexican Revolution (1910-1920) displaced hundreds of thousands of Mexicans, many of whom crossed into the American Southwest seeking safety and work. These immigrants brought cultural practices including the recreational smoking of cannabis, which they called 'marihuana.' While cannabis was already present in American pharmacies as a tincture, the practice of smoking it was largely associated with Mexican communities — and this association became a weapon.
02
Anti-marijuana campaigns in border states were openly racist. El Paso, Texas became one of the first cities to ban marijuana in 1914, driven explicitly by anti-Mexican sentiment. A 1913 California law restricted 'preparations of hemp, or loco weed' — using language that deliberately tied cannabis to Mexican and Indian communities. Local newspaper coverage routinely described marijuana-using Mexicans as violent, lazy, and dangerous.
03
The strategic use of the word 'marijuana' rather than 'cannabis' was a deliberate choice by prohibitionists. Americans in the early 20th century were familiar with cannabis as a common pharmaceutical ingredient found in over-the-counter medicines. By using the Spanish-sounding 'marijuana,' anti-drug crusaders could exploit xenophobic fears and prevent the public from recognizing that the 'dangerous Mexican drug' was the same plant already in their medicine cabinets.
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Black communities faced similar racialized marijuana enforcement. In the South and in northern cities like New Orleans, marijuana was associated with Black jazz musicians and was characterized as a drug that led to race mixing and violence against white people. New Orleans newspapers ran sensational stories claiming marijuana caused Black men to look at white women — narratives designed to trigger the deepest racial anxieties of the Jim Crow era.
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By 1931, twenty-nine states had enacted marijuana prohibition laws. The uniformity of these campaigns is striking: nearly every state debate invoked the specter of dangerous racial minorities under the influence of marijuana. Montana legislators were told that 'Mexicans made crazy by marihuana' had caused trouble. A Texas state senator declared that 'all Mexicans are crazy, and this stuff is what makes them crazy.' These statements were not fringe opinions but mainstream political arguments.
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The racial foundations of marijuana prohibition had lasting consequences. Enforcement patterns established in the 1910s-1930s persisted for decades. Studies consistently show that Black and Latino Americans are arrested for marijuana at rates three to four times higher than white Americans, despite similar usage rates. The racial architecture of early prohibition shaped policing practices, sentencing disparities, and community impacts that reformers continue to address through social equity programs in legal cannabis markets.
Key Figures
Harry Anslinger
Federal Bureau of Narcotics commissioner who amplified racial narratives
William Randolph Hearst
newspaper magnate whose papers spread anti-marijuana propaganda
Richmond Hobson
temperance crusader who linked marijuana to racial minorities
Denver Mayor Robert Speer
early advocate for marijuana prohibition in Colorado
Historical Significance
America's marijuana laws were born from racial prejudice, with prohibition campaigns deliberately using the foreign-sounding word 'marijuana' and anti-Mexican and anti-Black rhetoric to criminalize a plant that had been legally used for centuries.
Frequently Asked Questions
Why is the word 'marijuana' considered racially charged?
Prohibitionists deliberately chose the Spanish-sounding 'marijuana' over the scientific 'cannabis' to associate the plant with Mexican immigrants and exploit xenophobic fears. This prevented Americans from recognizing that the 'dangerous foreign drug' was the same cannabis already in their pharmacies.
When was marijuana first banned in the United States?
The first municipal ban was in El Paso, Texas in 1914, driven by anti-Mexican sentiment. California restricted cannabis preparations in 1913. By 1931, twenty-nine states had enacted marijuana prohibition laws, virtually all invoking racial anxieties.
How did racism shape marijuana enforcement?
From the earliest prohibition laws, enforcement disproportionately targeted Mexican and Black communities. This pattern persists today: Black Americans are arrested for marijuana at 3-4 times the rate of white Americans despite similar usage rates. The racial architecture of early prohibition shaped policing for generations.