The squares look really silly in director Arthur Penn’s 1969 film and the hippies look like they were having all the fun. A closer look reveals drug addiction, complications of free love and low status for women amid the fine talk of freedom. Hovering over everything is the threat of being drafted to Vietnam and threaded throughout is the music of Arlo Guthrie, who looked 16 and sounded 60. Alice’s Restaurant is out on Blu-ray.