The hippie movement in the United States began as a youth movement. Composed mostly of white teenagers and young adults between 15 and 25 years old, hippies inherited a tradition of cultural dissent from bohemians and beatniks of the Beat Generation in the late 1950s. Beats like Allen Ginsberg crossed over from the beat movement and became fixtures of the burgeoning hippie and anti-war movements. By 1965, hippies had become an established social group in the U.S., and the movement eventually expanded to other countries, extending as far as the United Kingdom and Europe, Australia, Canada, New Zealand, Japan, Mexico, and Brazil. The hippie ethos influenced The Beatles and others in the United Kingdom and other parts of Europe, and they in turn influenced their American counterparts. Hippie culture spread worldwide through a fusion of rock music, folk, blues, and psychedelic rock; it also found expression in literature, the dramatic arts, fashion, and the visual arts, including film, posters advertising rock concerts, and album covers. In 1968, self-described hippies represented just under 0.2% of the U.S. population and dwindled away by mid-1970s.