The Justice Department announced Monday that it will reopen a criminal investigation into the 1955 murder of Emmett Till that fueled the civil rights movement. Till was a 14-year-old African American who was pulled from his bed in Mississippi and brutally killed allegedly for whistling to a white store clerk. Two white men implicated by eyewitnesses were acquitted by an all-white jury. New evidence in the case emerged during the production of a new PBS documentary implicating many others.