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A student uses a water pipe to smoke marijuana outside the police barrier on the Norlin Quad at the University of Colorado in Boulder, Colo., on Friday, April 20, 2012. Police blocked off the quad to prevent a 420 marijuana smoke out. (AP Photo/Ed Andrieski)

Potfest at Colo. university is much smaller

Stinky fish fertilizer and two dozen law-enforcement officers kept pot smokers away from a grassy quad at the University of Colorado on April 20, but a few hundred protesters defied the crackdown and rallied on another field, where some lit up at 4:20 p.m. It was a far cry from last year's April 20 pot celebration, when more than 10,000 people gathered