The hippie revolution in the 1960s and 1970s was about far more than fashion or music. It grew out of a generation questioning old ideas, seeking freedom, and trying to build a different way of life.

The word “hippie” – used many times during the 1960s to describe the culture the pot user most likely belonged to – had etymological roots in “hipster,” a term used to describe potheads in the 1930s ...