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The Human Be-In, a countercultural event forming a prelude to the Summer of Love, was held in San Francisco's Golden Gate Park.

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Human Be-In
1967 countercultural gathering in San Francisco, California
The Human Be-In was an event held in San Francisco's Golden Gate Park Polo Fields on January 14, 1967. It was a prelude to San Francisco's Summer of Love, which made the Haight-Ashbury district a symbol of American counterculture and introduced the word "psychedelic" to suburbia.Source: Wikipedia (CC BY-SA)
Counterculture of the 1960s
Anti-establishment cultural phenomenon
The counterculture of the 1960s was an anti-establishment cultural phenomenon and political movement that developed in the Western world during the mid-20th century. It began in the mid-1960s, and continued through the early 1970s. It is often synonymous with cultural liberalism…Source: Wikipedia (CC BY-SA)
Summer of Love
1967 social phenomenon in San Francisco
The Summer of Love was a major social phenomenon that occurred in San Francisco during the summer of 1967. As many as 100,000 people, mostly young people, hippies, beatniks, and 1960s counterculture figures, converged in San Francisco's Haight-Ashbury district and Golden Gate…Source: Wikipedia (CC BY-SA)
Golden Gate Park
Public park in San Francisco, California, United States
Golden Gate Park is an urban park between the Richmond and Sunset districts on the West Side of San Francisco, California, United States. It is the largest urban park in the city, containing 1,017 acres (412 ha), and the third-most visited urban park in the United States, with…Source: Wikipedia (CC BY-SA)