Mexico's "Yo Soy 132" Student Movement

This Internet-driven movement didn't alter the outcome of Mexico's July 2012 presidential election -- since the candidate being "imposed" by the two major TV networks ended up winning.  But the student activists of Yo Soy 132 had impact; they set up an historic presidential debate that was carried online (TV-promoted frontrunner, Enrique Pena Nieto, was the only candidate who didn't show up).  It was this video on You Tube that launched the movement, after a campus protest had embarrassed Pena Nieto