Obama publicly framed American history as defined by forward racial progress

Evidence

Obama, himself an avatar of that progress, knew he had to explain this in his address. β€œYes, our progress has been uneven,” he said. β€œFor every two steps forward, it often feels we take one step back. But the long sweep of America has been defined by forward motion, a constant widening of our founding creed to embrace all and not just some.” β€” Nikole Hannah-Jones et al., The 1619 Project, 1236