It was the best of times or, depending on your political and philosophical outlook, one of the foulest and most depraved. Rebellion seemed to be leaping from city to city, continent to continent, by some fiery process of contagion. Vietnam unleashed the Tet offensive; France shook with the revolutionary "events of May"; radical students filled the streets of Mexico City, Berlin, Tokyo, Beijing, Prague. In the U.S., Chicago swirled into near anarchy as cops battled antiwar demonstrators gathered at the Democratic Convention. And everywhere from Amsterdam to Haight-Ashbury, a generation was getting high, making love, acting up.
So, clearly, it was...