On January 14, 1967, 49 years ago today, between 20,000 and 30,000 people gathered in San Francisco's Golden Gate Park for a counterculture gathering known as the Human Be-In: A Gathering of Tribes.
The Human Be-In was a reaction to a new California law that banned the drug LSD that went into effect the previous October. While a number of San Francisco based bands played at the festival, the day's events also included talks by the likes of Timothy Leary, Dick Gregory, Allen Ginsberg and Jerry Rubin.
Then there were the bands, a who's who of acts that came from the city including the Jefferson Airplane, the Grateful Dead, the Sir Douglas Quintet. Santana, Big Brother & the Holding Company, the Steve Miller Band and Quicksilver Messenger Service.
Here are a few videos chronicling the event.
The Grateful Dead with Viola Lee Blues
Visuals from the event set to Blue Cheer
Finally, here are home movies, shot with an 8 mm camera by a user on YouTube: