This photograph of an Anti-Internment League event in the early 1970s, addressed by the Provisional Sinn Fein organiser Brendan McGill, shows an important side to protest: the indoor meeting to organise, campaign, and persuade. Note the fashions in terms of clothes and haircuts, which help date the photograph. Radical campaign meetings were often infiltrated by undercover police officers, a source of much recent controversy. The League, which brought together Irish and British campaigners, was founded after the introduction of internment in Northern Ireland on 9 August 1971. It had two core demands: the immediate release of all internees and the immediate withdrawal of British troops from Ireland. In 1972, the League organised the picketing of British army recruitment centres.