Scientists, historians, advocates and adversaries all have their say in this A&E series on illegal drugs. "Marijuana: Assassin of Youth" looks at pot and speed, and how both became illegal in the United States during the 20th century. The cam paign by Harry Anslinger against marijuana contrasts with the early popular use methamphetamines. Starting with the Opium Wars in China, "Dope Fiend’s Paradise" surveys the use of opium, morphine and heroin throughout the centuries. Narcotic s in patent medicines and 1914 legislation making opium consumption illegal are highlighted. Filmmaker Tom Yaroschuk; narrator Barbara Rosenblat. A&E Television Networks. Closed captioned.