While most of the nation ignored growing evidence of the fragility of American prosperity, the social and cultural consequences of the second industrial revolution received considerable attention, as new, distinctly modern cultural patterns emerged. Advertising and credit, two of the mainstays of modern capitalism, sought to bypass the time-honored virtues of saving and living within one’s means. Conventional sexual standards came under assault from the growth of the film and automobile industries, which influenced clothing styles and dating practices. In addition to moral and social behavior, traditional racial assumptions came under attack. African American writers and artists condemned racism, drew on their rich racial legacies, and produced a cultural renaissance. Other blacks, led by the Jamaican immigrant Marcus Garvey, rejected the integrationist strategy of the NAACP in favor of black nationalism.