Pluralus is exactly on target: this is an aspect of but not the entirety of U.S. history.

For example, the involvement of France in the tension between the U.K. and the U.S. has at best a modest amount to do with racism; a lot of it has to do with the historical antagonism and competition between France and the U.K.. The entire cold war endeavor had basically nothing to do with racism, but was profoundly transformative: the space race, mutually assured destruction, "better dead than Red". And so forth and so on.

You can't understand U.S. history without understanding racism. But if you only understand racism, you also have an incredibly impoverished ("wrong") view of it.