Huge earthquake rocks Mexico

A child cries after she and her classmates were evacuated from her school in the Roma neighborhood when an earthquake was felt in Mexico City, Tuesday March 20, 2012.  A strong, long earthquake with epicenter in Guerrero state shook central southern Mexico on Tuesday, swaying buildings in Mexico City and sending frightened workers and residents into the streets. (AP Photo/Alexandre Meneghini) <span class=meta>(AP Photo/ Alexandre Meneghini)</span>
March 20, 2012 3:35:09 PM PDT