Although recent research suggests that individuals active in social protest in the 1960's maintain their activist identities, the structural links which allow the continuity have yet to be identified. A review of research reveals that the continuity of self-identification, political attitudes and activities, and occupational choices is influenced by proximity to and interaction with movement members; that is, structural support must exist. Radical political attitudes are generated and sustained through interaction with other like-minded individuals. One theory is that activist networks forged during the (1960's) survive in a highly fragmented form. Any given individual may only be linked to one or two others, but when aggregated, these connections can expand to a large proportion of the population. Another possibility is that individual continuities are sustained through new networks forged on a local level by former activists. Recent evidence of these networks is seen in the rapid mobilization of the anti-draft and nuclear freeze movements. Thus, in spite of the seeming disinterest in collective action, the United States could be closer to widespread protest than appearances would suggest. (KC)