Students place their hands on their hearts during a convocation a day after killings at Virginia Tech in Blacksburg, Virginia, April 17, 2007. Virginia Tech student Cho Seung-hui from South Korea was ...

U.S. President George W. Bush addresses a convocation a day after killings at Virginia Tech in Blacksburg, Virginia, April 17, 2007. Virginia Tech student Cho Seung-hui from South Korea was identified ...