Photographs of the first Congressional Black Caucus, in 1971, show a group of 12 men and one woman. Back then, it was a small club, and yet its message was huge: These 13 legislators, standing on the steps of the Capitol, had claimed their rightful place in Washington. Congress would never look the same. Roll Call’s mini-documentary examines the trials and triumphs of the CBC’s 40 years.ü