I do remember in 1968 when Abbie Hoffman was arrested for wearing a shirt made out of the flag as he was going to testify before the House Un-American Activities Committee (HUAC). News accounts used techniques of the day to obscure the shirt; it was THAT offensive.
Given today's merchandising of American flag button-down shirts, a posthumous apology is in order.
It's actually hilarious that he would try to do that; who knew that his legacy would be carried on even today by establishmentarian deviants at college fraternity parties?