This is the book mentioned in the previous post. It was released yesterday, and Amazon had it on my doorstep by noon. It is indeed worth reading. It will, of course, draw lots of criticism from those whose self-identities and careers are built on identity politics, but Lille makes a good case for why liberals need to abandon the destructive (and ineffectual) identity politics, pitting groups against each other, and return to a vision of a common good and common responsibilities across all American citizens and all groups.
I certainly hope a new young Millennial crop of liberals will read it and learn from it. That is the current best hope for liberals in America.