And herein lies the paradox at the heart of “Watchman” that many white Americans still cannot or will not comprehend: that one can at once believe in the ideal of “justice for all” — as Atticus once purported to — and yet maintain a deeply ingrained and unexamined notion of racial difference now based in culture as opposed to biology, a milder yet novel version of white supremacy manifest in, for example, racial profiling, unfair and predatory lending practices, disparate incarceration rates, residential and school segregation, discriminatory employment practices and medical racism.