I just started *Caste* by Isabel Wilkerson and am already engrossed.

"[W]e are all born into a silent war-game, centuries old, enlisted in teams not of our own choosing. The side to which we are assigned in the American system of categorizing people is proclaimed by the team uniform that each caste wears, signaling our presumed worth and potential. That any of us manages to create abiding connections across these manufactured divisions is a testament to the beauty of the human spirit."