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