If you are a reactionary, your view of American history probably runs something like this: America was settled by white Christians; by their own grit and godliness, and without government assistance, they made America great; they therefore are the only true Americans, and are empowered by God to run the country; their predominance is threatened by haughty, over educated liberals, minorities begging for handouts, and uppity women; so real Americans have the right to do anything in their power to remain in charge.
Left wing Twitter activists tell a different story. To them, America is, was, and will always be an irredeemably racist and sexist country. The story of America is one of oppression. Liberals, on the other hand, see the central narrative of America as the struggle for the perfect union. This is an ongoing effort, and one with plenty of failures, but the end is a liberal democratic system in which the rights of everyone are respected, and even embraced. It is a happy ending.
All of these narratives encourage their adherents to disregard or distort inconvenient facts, but not to the same degree. The liberal narrative contains more humility (it acknowledges that backward steps are always possible), and it actually fits the facts better than its competitors. Life for women and minorities may not be perfect in today’s America, but do you really think nothing has changed since 1619, or even 1950? On the other side, do you really believe the band of religious skeptics who wrote the Declaration and the Constitution intended to give right-wing Christians a perpetual monopoly on power? Only in their fevered dreams.