It's not that simple. "Cultural diversity" doesn't automatically mean "cultural integration." That's the thing about liberals - it's all about optics. Cities aren't culturally diverse because they're liberal; they're liberal because their populations contain a high percentage of groups most easily manipulated by liberal promises - the poor, the uneducated, immigrants, minorities, low-information voters, etc. The offsetting middle to upper classes? They've moved to the suburbs and surrounding counties. They didn't become more "enlightened" and accepting and inclusive; they fled. The wealth doesn't tend to stay in the metropolitan areas. Louisville's wealth tends to flee to Oldham County or the suburbs - Anchorage, Prospect, Middletown, Mockingbird Valley, Glenview, etc. Nashville? It fled to Brentwood/Williamson Co. Memphis? It fled to the suburbs of Shelby Co. Same scenario with the other cities you mentioned. You can see the same effect on a smaller scale in Jefferson County public schools with the whole busing mess. "We need to be more diverse, so we'll take whites from here and bus them over there, and blacks from there and bus them over here." And it's been a disaster. It's allowed the Board to pat itself on the back and say "look how culturally diverse our schools are," but it's done very little to integrate whites and blacks or increase performance.