Thousands of people showed up at Norlin Quad on Sunday, April 20, to participate in the annual 4/20 event at the University of Colorado.
A fan of 4/20 sports a marijuana-leaf costume on Norlin Quad as she and thousands of others celebrate the unofficial holiday
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An aerial view of Norlin Quad on Sunday afternoon indicates the massive number of attendees at CU's 4/20 celebration.
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They came, they saw, they got baked.
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