The Tower of Babel and the Problem of Identity-Based "Truths"

The plain sense of the brief Tower of Babel story is that dividing people up by their own languages is a curse that prevents cooperation (even if the Rabbis read the story differently). Using Coleman Hughes's essay on the Civil Rights hero Bayard Rustin, I wonder if the curse of our times is the identiy-based division of truths: is this modern paradigm a blessing of diversity or a curse for our much needed cooperation in solving our collective problems?