I feel like one of the main reasons this game is tracking so high with reviewers is because it dares to approach the idea of racism and segregation. But just addressing these important topics isn't enough for me, and I feel the game does a real disservice to... everything... but lacking any subtlety in the matter. The mistreatment of minorities would have had far more impact to me if it wasn't essentially all people talked about, and if I had slowly realized what was going on in Columbia (and America) based on details, and not blunt-force-trauma to the head.
I think the problem is that your taking the theme of racism and segregation as a theme of Columbia, when it's more supposed to reflect the inner conflict of Booker.
It's really more of a mirror reflecting the chaos of Bookers life, rather than a direct commentary of racism in 1912's society.