1971: Angered at the U.S. involvement in the Vietnam War, many American citizens feel the need to resist the prevailing social order, sometimes violently.

Today: Frightened by the prospect of terrorist attacks, many citizens look to the American government for protection.

1971: One of the longest periods of economic growth in the country's history makes it possible for young people to take financial security for granted, turning their backs on the morally unsatisfying pursuit of money.

Today: The unstable economy makes money harder to come by, which in turn makes it harder to survive off sharing or handouts.

1971: Steal This Book takes a position that large, faceless corporations are inhumane and deserve to be robbed.

Today: Advances in transportation and telecommunication have made corporations multinational and therefore even more impersonal. Nineteensixties- like protests are aimed against the G- 20 Conference and the World Trade Organization, groups...