Regardless of your views, please don't bash or turn this into a political debate.
From Wikipedia
420, 4:20 or 4/20 (pronounced four-twenty) refers to consumption of cannabis and, by extension, a way to identify oneself with cannabis subculture.
The term originated from a group of teenagers at San Rafael High School in San Rafael, California, United States in 1971. The teens would meet after school at 4:20 p.m. to smoke marijuana at the Louis Pasteur statue.
According to an April 2009 article on the The Huffington Post, the group called itself the Waldos because its members hung out by a wall after school. Writer Ryan Grim, citing interviews with anonymous Waldos, claims that the group met by the statue at 4:20 p.m. to begin a search for a crop of abandoned cannabis growing near Point Reyes that they had heard about. They never found the stash, Grim writes, but smoked plenty of marijuana while looking for it.
April 20 ("4/20" in U.S. date notation) has evolved into a counterculture holiday, where people gather to celebrate and consume cannabis. In some locations this celebration coincides with Earth Week. At events in the United States, it is common to hear about Abraham Lincoln, one of many American politicians known for past use of cannabis, who wrote that one of his "favorite things" was "smoking a pipe of sweet hemp". Some events may have a political nature to them, advocating for the decriminalization of non-medical cannabis in the United States.
