One hundred years ago, "October 1917" galvanized leftists and oppressed peoples around the globe, and became the lodestar for 20th century politics. Today, the left needs to reckon with this legacy--and transcend it. Social change, as it was understood in the 20th century, appears now to be as impossible as revolution, leaving the left to rethink the relationship between capitalist crises, as well as the conceptual tension between revolution and...