PHOTOS: 15,000 people gather for 4/20 celebration at SF's Golden Gate Park

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Friday, April 21, 2017
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An estimated 15,000 people gathered in San Francisco’s Golden Gate Park to celebrate 4/20 on Thursday, April 20, 2017.

SAN FRANCISCO (KGO) -- Thousands gathered in Golden Gate Park to light up in honor of 4/20.

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