May 27, 1963: President Nathan M. Pusey of Harvard University announces that an assistant professor of clinical psychology and education has been fired. The man dismissed was Dr. Richard Alpert, later known as "Ram Dass."

May 29, 1969: The Canadian government forms the Commission of Inquiry into the Non-Medical use of Drugs, which ultimately issues the famed LeDain report, recommending that simple possession of cannabis and cultivation for personal use be permitted. The report contradicts almost all of the common fallacies held by some of the general public. During an interview in 1998, LeDain blames politicians for the fact that virtually none of the commission's recommendations were made into law.

May 26, 1971: In tapes revealed long after his presidency ended, President Richard M. Nixon says, "You know it's a funny thing, every one of the bastards that are out for legalizing marijuana is Jewish. What the Christ is the matter with the Jews, Bob, what is the matter with them? I suppose it's because most of them are psychiatrists, you know, there's so many, all the greatest psychiatrists are Jewish."

May 25, 1973: The NBC Evening News reports that 28 marines and 18 sailors handling the president's yacht were transferred and reassigned from Camp David due to marijuana offenses.

May 30, 1977: Newsweek runs a story on cocaine reporting that "Among hostesses in the smart sets of Los Angeles and New York, a little cocaine, like Dom Perignon and Beluga caviar, is now de rigueur at dinners. Some party givers pass it around along with canapes on silver trays... the user experiences a feeling of potency, of confidence, of energy."

May 28, 1994: President Clinton's appointed director of the Drug Enforcement Administration, Thomas Constantine, says in a Washington Times interview: "Many times people talk about the nonviolent drug offender. That is a rare species. There is not some sterile drug type not involved in violence -- there is no drug user who is contributing some good to the community -- they are contributing nothing but evil."

May 31, 1996: Psychedelic guru Timothy Leary dies.

May 31, 2000: Lions Gate Films releases Grass, the Woody Harrelson-narrated/Ron Mann-directed documentary about the history of marijuana in 20th century America.