PHOTOS: 4/20 celebration on San Francisco's Hippie Hill

<div class="meta image-caption"><div class="origin-logo origin-image none"><span>none</span></div><span class="caption-text">Crowds gather at San Francisco's Hippie Hill on Friday, April 20, 2018. (KGO-TV)</span></div>
Thousands are lighting up on Hippie Hill for San Francisco's 4/20 celebration on Friday, one of the world's largest celebrations of cannabis.

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societymarijuanapot clubsmokingfestivalcannabis watchbusinessholidaySan FranciscoGolden Gate Park
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