This is rather wide ranging. I think that you might want to offer up some specificity in the question in order to derive answers that are more focused. The political tactics of social movements are as divergent as the groups that represented different interests. Certainly, the "old reliable" of political interests of groups that seek to be heard is the social call for change. This can manifest itself in protests or boycotts, with organized movements such as marches and assemblies as means to bring about social change through attention. During the Civil Rights Movement in the 1950s and 1960s, moments like the Montgomery Bus Boycott or the March on Washington were examples of defining social protest instances where the public imagination was captured. This idea was replicated in the drive for women's rights in the 1970s and the drive for the social acknowledgement of gays and lesbians in the years that followed.