Summer of Love: How Hippies Changed the World review - the weird and wonderful roots of the Sixties counterculture
BBC Four reveals the secrets of the mind-expanding summer of '67
As the accompanying music reminded us, it's the time of the season for looking back in languor at the psychedelic daze that descended on America's West Coast in 1967. It was an era when one was enjoined, if going to San Francisco, to "be sure to wear flowers in your hair". "Feed your head," added the Jefferson Airplane, ensconced in their Haight-Ashbury rabbit-hole.