In 1964, most Americans were unaware that black people were literally dying for trying to vote in Mississippi. Bob Moses and other "SNCCs" hoped that Freedom Summer would change that. In the very first days of the program, three volunteers--two of them white--disappeared.  It made national headlines. That summer, America was also introduced to Fannie Lou Hamer, who spoke at the Democratic National Convention. Sympathetic calls flooded the White House. And President Lyndon Johnson feared for his re-election chances.