A student uses a water pipe to smoke marijuana outside the police barrier on the Norlin Quad at the University of Colorado in Boulder, Colorado, on Friday, April 20, 2012. Police blocked off the quad to prevent a 420 marijuana smoke out. Stinky fish fertilizer and two dozen law enforcement officers kept pot smokers away from a grassy quad at the University of Colorado on Friday, 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 on the university's Norlin Quadrangle for the annual ritual of enjoying a smoke and demonstrating for legalizing marijuana. That made the university the scene of one of the largest campus celebrations of cannabis in the nation, a reputation that prompted university administrators to take extraordinary steps to stamp out this year's rally. They banned unauthorized visitors from campus, and spread smelly fertilizer on the Norlin Quad and declared it off limits. They even booked Haitian born hip-hop star Wyclef Jean for a free concert timed to coincide with the traditional 4:20 p.m. pot gathering. - U-T San Diego
