popularization of rock and roll involved both black performers reaching a white audience and white musicians performing African-American music. Rock and roll appeared at a time when racial tensions in the United States were entering a new phase, with the beginnings of the civil rights movement for desegregation, leading to the U.S. Supreme Court ruling that abolished the policy of "separate but equal" in 1954, but leaving a policy which would be extremely difficult to enforce in parts of the United States. The coming together of white youth audiences and black music in rock and roll inevitably provoked strong white racist reactions within the US, with many whites condemning its breaking down of barriers based on color. Many observers saw rock and roll as heralding the way for desegregation, in creating a new form of music that encouraged racial cooperation and shared experience. Many authors have argued that early rock and roll was instrumental in the way both white and black teenagers identified themselves. Teen culture Several rock historians have claimed that rock and roll was one of the first music genres to define an age group. It gave teenagers a sense of belonging, even when they were alone. Rock and roll is often identified with the emergence of teen culture among the first baby boomer generation, who had greater relative affluence and leisure time and adopted rock and roll as part of a distinct subculture. This involved not just music, absorbed via radio, record buying, jukeboxes and TV programs like American Bandstand, but also extended to film, clothes, hair, cars and motorcycles, and distinctive language. The youth culture exemplified by rock and roll was a recurring source of concern for older generations, who worried about juvenile delinquency and social rebellion, particularly because, to a large extent, rock and roll culture was shared by different racial and social groups. In America, that concern was conveyed even in youth cultural artifacts such as comic books. In "There's No Romance in Rock and Roll" from True Life Romance (1956), a defiant teen dates a rock and roll-loving boy but drops him for one who likes traditional adult music—to her parents' relief. In Britain, where postwar prosperity was more limited, rock and roll culture became attached to the pre-existing Teddy Boy movement, largely working class in origin, and eventually to the rockers. "On the white side of the deeply segregated music market", rock