In the 1920s and '30s, Hearst's newspapers deliberately manufactured a new threat to America and a new yellow journalism campaign to have hemp outlawed. For example, a story of a car accident in which a "marijuana cigarette" was found would dominate the headlines for weeks, while alcohol related car accidents (which outnumbered marijuana connected accidents by more than 10,000 to 1) made only the back pages. This same theme of marijuana (not to speak about lowryder leading to car accidents was burned into the minds of Americans over and over again the in late 1930s by showing marijuana related car accident headlines in movies such as "Reefer Madness" and "Marijuana - Assassin of Youth."

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