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