A protest by university students closed the entrance of Mobile World Congress Wednesday and choked off physical traffic around the venue.
Here, armed policemen stand guard, preventing anyone--protesters or convention goers--to enter MWC, which is held at the Fira de Barcelona-Montjuic.
February 29, 2012 11:01 AM PST
Photo by: Roger Cheng/CNET
| Caption by: Roger Cheng
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