For its part, the left needs to rethink its scorched-earth approach to American history and ideals. Exposing injustice, past and present, is important, but there’s a world of difference between saying that America has repeatedly failed to live up to its constitutional principles and saying that those principles are lies or smoke screens for oppression. Washington and Jefferson were slave owners. They were also political visionaries who helped give birth to what would become the most inclusive form of governance in world history.