As you might expect, William Breathes, the solar system's first medical marijuana critic and overseer of our sister Toke of the Town blog, was everywhere on 4/20 weekend. And he brought his camera with him.
Before Saturday's 4/20 rally dissolved into chaos after shots were fired, injuring three, Breathes captured a slew of memorable images, including several shots that capture the moment when thousands at Civic Center Park jointly created one of the largest marijuana clouds in recent memory. Check out the gallery below.
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More from our Mile Highs and Lows archive: "Photos: High Times Cannabis Cup 2013 wrap-up and winners."