C.S.A.: The Confederate States of America (2004) on Netflix

Set in an contemporary alternative world where the Confederate States of America managed to win the American Civil War, a British film documentary examines the history of this nation. Beginning with its conquest of the northern states, the film covers the history of this state where racial enslavement became triumphant and the nation carried sinister designs of conquest. Interspersed throughout are various TV commercials of products of a virulent racist nature as well as public service announcements promoting this tyranny. Only at the end do you learn that there is less wholly imagined material in the film than you might suspect.