Approximately 20,000 people gather on Hippie Hill in San Francisco's Golden Gate Park to celebrate Marijuana on 4/20: National Weed Day, Wednesday, April 20, 2016. (Ekevara Kitpowsong/Special to S.F.Examiner)
Approximately 20,000 people gather on Hippie Hill in San Francisco's Golden Gate Park to celebrate Marijuana on 4/20: National Weed Day, Wednesday, April 20, 2016. (Ekevara Kitpowsong/Special to S.F.Examiner)
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