I've lived in Houston and Boston, and me telling you that Boston is more racist, can't convince you. Neither anecdotes nor data.
But the "Race to the bottom of racism" isn't even important. What's important is that white people in Louisville don't smugly look down their nose at white people in Atlanta or Houston, and say "You all are so racist over there!" while simultaneously not acknowledging the equal or greater racism experienced by Black folk in their city.