National prohibition of alcohol (1920-33)–the “noble experiment”–was undertaken to reduce crime and corruption, solve social problems, reduce the tax burden created by prisons and poorhouses, and improve health and hygiene in America. Not everyone thinks it worked.
Mark Thornton, “Alcohol Prohibition Was a Failure“, Policy Analysis, July 1991
In 2001, Portugal became the first European country to officially abolish all criminal penalties for personal possession of drugs, including marijuana, cocaine, heroin and methamphetamine.
Drugs in Portugal: Did Decriminalization Work?, Time Science, April 2009
War on drugs has failed, say former heads of MI5, CPS and BBC, The Telegraph, March 2011