A lot of people claim to want to understand white supremacy, but they really don't. They tend to turn it into this abstract concept. And they have such a hard time mapping it back to real words and actions that real humans take in the real world.
I've come to understand this is a defense mechanism. Whether conscious or unconscious. People don't actually want to grapple with how white supremacy exists in the actual humans that they can see and talk to. It's safer as an invisible Boogeyman.