Carol Brightman: author of Sweet Chaos: The Grateful Dead's American Adventure

Carol Brightman was an anti-war activist in the '60s and later the biographer of the writer Mary McCarthy. She sometimes wondered why so many of the committed social-change movements of the '60s were crushed or co-opted, or just fizzled out, while the Grateful Dead's hedonistic, tribal road show grew and throve and wound up a cultural institution.