After the alcohol prohibition in 1933, the marijuana tax prohibiting the use of cannabis took place, destroying the hemp industry, the head of Federal Bureau or Narcotics (formaly DEA) Harry J. Anslinger stated "Marijuana is a drug causing most violence, people smoking it are Negroes, Hispanics, Filipinos and entertainers. Their Satanic music, jazz and swing, result from marijuana usage. This marijuana causes white women to seek sexual relations with Negroes." People thought that Anslinger was a marijuana expert,in reality he had no expert knowledge of the effects of cannabis. In 1936 the liquor industry funded the creation of propaganda film called "Reefer Madness" or "Tell Your Children", the plot is that a student started smoking cannabis and he went insane and started killing his family. There is a theory that cannabis was banned because it would destroy the timber and fuel industry, even after the prohibition Henry Ford illegally grown cannabis and used them as fuel.