He was a youth movement that took place in the last years of the 1960s and was characterized by nonviolent anarchy, concern for the environment and the rejection of Western materialism. The hippies formed a politically daring and counter anti-war, artistically prolific in the U.S. and Europe. His style psychedelic and colorful was inspired by hallucinogens such as lysergic acid (LSD) and was embodied in fashion, graphic arts, and music from artists like Janis Joplin or bands such as Love, Grateful Dead, Jefferson Airplane and Pink Floyd.