Medical marijuana supporter J.W. Marshall wears a 420 shirt from Oaksterdam University during a rally outside of the Ronald V. Dellums Federal Building in Oakland, Calif., Friday, April 20, 2012. (AP ... more 
Medical marijuana supporter J.W. Marshall wears a 420 shirt from Oaksterdam University during a rally outside of the Ronald V. Dellums Federal Building in Oakland, Calif., Friday, April 20, 2012. (AP Photo/Jeff Chiu) less 
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Associated Press | Photo By Jeff Chiu
Fri, Apr 20, 2012 9:11 PM EDT