In ‘Other People’s Struggles’, Nicholas Owen looks at the outsider in social movements–people like men in women’s movements, white people in anti-colonial movements, or rich people in movements for the poor. He asks why such outsiders, usually termed conscience constituents, are sometimes present and sometimes absent, drawing on examples from British history of the last two hundred years. It develops an original theory to explain their motivations, the consequences of their participation, and their controversial, complex and changing place in social movements of the past and present.