History 55 Years Ago: Hippies 'Turn on, Tune in, Drop out' at Human Be-In 55 Years Ago: Hippies ‘Turn on, Tune in, Drop out’ at Human Be-In Related Posts History How Robert Palmer Dreamed Up His 1986 Hit ‘Addicted to Love’ History How a Drug Dealer Helped Inspire Eagles’ ‘Life in the Fast Lane’