Camille Cosby says the guilty verdict facing her husband Bill Cosby is an example of 'mob justice.'<br />In a letter, Cosby's wife also called for an investigation into the DA's prosecution.<br />District Attorney Steele led the retrial of the case after the hung jury on the same charges last summer.<br />Cosby compared her husband's conviction to injustices of the civil rights movement.<br />She specifically mentioned the 1955 lynching of Mississippi teenager Emmett Till.<br />Till's killers were acquitted. <br />
