Counterculture: A way of life and set of attitudes that are completely different from what is regarded as normal or mainstream.
Hippies: Members of a liberal counterculture, originally a youth movement that started in the United States during the mid-1960s and spread to other countries around the world.
Summer of Love: A social phenomenon that occurred during the summer of 1967 when about 100,000 people converged on the Haight-Ashbury neighborhood, initiating a major cultural and political shift.