Apr 20, 2012 6:34 AM by Kate Richards
DENVER (AP) - Colorado's flagship university is restricting visitors for a day in a bid to stop an annual marijuana protest that last year attracted more than 10,000 people.
Every year, many marijuana activists across the nation hold pot-smoking protests on April 20 to demand legalization. The gathering at the University of Colorado in Boulder has become one of the biggest campus protests.
On Friday, the university is restricting access to authorized visitors. It's also spraying a quadrangle where the pot protest normally takes place with a foul-smelling fertilizer.
Officials say about half of last year's protesters didn't even attend the school. Some legalization supporters say the university is restricting students' First Amendment rights to protest.