Early this week marked the 40th anniversary of Woodstock. It was, by all accounts, the defining cultural event of an entire generation. It was also, in many ways, much more than that. It was at once a cultural crescendo and a heavy, ideological tombstone — the final punctuation mark on a decade of revolution and activism. It was the culmination of a generation’s revolt against war; it was a celebration of the successfully-waged sexual revolution.