In this April 20, 2018, file photo, an attendee celebrates at 4:20 p.m. by lighting up marijuana during the Mile High 420 Festival in Denver. (AP Photo/David Zalubowski) ** FILE **
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In this April 20, 2018, file photo, an attendee celebrates at 4:20 p.m. by lighting up marijuana during the Mile High 420 Festival in Denver. (AP Photo/David Zalubowski) ** FILE **
