4/20 celebration descends on Hippie Hill in SF

Thousands gathered at Hippie Hill in San Francisco’s Golden Gate Park Thursday, April 20, 2017 to celebrate the annual 4/20 holiday and smoke with friends, traditionally at 4:20 p.m. City sanctions put some restrictions on the event such as required vendor permits and heavier police presence, marking the first officially organized 4/20 celebration since the start of the annual gathering. Photos by Jessica Christian/S.F. Examiner.

A man smokes a large joint during the 4/20 celebration at Hippie Hill in San Francisco's Golden Gate Park Thursday, April 20, 2017. (Jessica Christian/S.F. Examiner)

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A man smokes a large joint during the 4/20 celebration at Hippie Hill in San Francisco's Golden Gate Park Thursday, April 20, 2017. (Jessica Christian/S.F. Examiner)

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