<P> By the later 1960s, previously under - regarded FM radio replaced AM radio as the focal point for the ongoing explosion of rock and roll music, and became the nexus of youth - oriented news and advertising for the counterculture generation . </P> <P> Communes, collectives, and intentional communities regained popularity during this era . Early communities, such as the Hog Farm, Quarry Hill, and Drop City in the US were established as straightforward agrarian attempts to return to the land and live free of interference from outside influences . As the era progressed, many people established and populated new communities in response to not only disillusionment with standard community forms, but also dissatisfaction with certain elements of the counterculture itself . Some of these self - sustaining communities have been credited with the birth and propagation of the international Green Movement . </P> <P> The emergence of an interest in expanded spiritual consciousness, yoga, occult practices and increased human potential helped to shift views on organized religion during the era . In 1957, 69% of US residents polled by Gallup said religion was increasing in influence . By the late 1960s, polls indicated less than 20% still held that belief . </P> <P> The "Generation Gap", or the inevitable perceived divide in worldview between the old and young, was perhaps never greater than during the counterculture era . A large measure of the generational chasm of the 1960s and early 1970s was born of rapidly evolving fashion and hairstyle trends that were readily adopted by the young, but often misunderstood and ridiculed by the old . These included the wearing of very long hair by men, the wearing of natural or "Afro" hairstyles by Blacks, the donning of revealing clothing by women in public, and the mainstreaming of the psychedelic clothing and regalia of the short - lived hippie culture . Ultimately, practical and comfortable casual apparel, namely updated forms of T - shirts (often tie - dyed, or emblazoned with political or advertising statements), and Levi Strauss - branded blue denim jeans became the enduring uniform of the generation . The fashion dominance of the counterculture effectively ended with the rise of the Disco and Punk Rock eras in the later 1970s, even as the global popularity of T - shirts, denim jeans, and casual clothing in general have continued to grow . </P>

What were the causes of the counterculture movement of the late 1960s and 70s