Boomers grew up at a time of dramatic social change. In the United States, that social change marked the generation with a strong cultural cleavage, between the proponents of social change and the more conservative. Some analysts believe this cleavage played out politically since the time of the Vietnam War to the mid‑2000s, to some extent defining the political landscape and division in the country. Starting in the 1980s, the boomers became more conservative, many of them regretting the cultural changes they brought in their youth