Fight the Power: Protest posters at Birmingham arts festival

May 1, World Labour Day Photograph: BASS/Custard Factory/British Arts Council Get Down White Boy! Photograph: BASS/Custard Factory/British Arts Council The True Face of Imperialism Photograph: BASS/Custard Factory/British Arts Council Release Nelson Mandela Photograph: BASS/Custard Factory/British Arts Council Praise God Photograph: BASS/Custard Factory/British Arts Council The Rumour is the Weapon of the Enemy Photograph: BASS/Custard Factory/British Arts Council 25 September 1975 Photograph: BASS/Custard Factory/British Arts Council Indepencia Photograph: BASS/Custard Factory/British Arts Council 16 Days of Activism Photograph: BASS/Custard Factory/British Arts Council United in the Development Photograph: BASS/Custard Factory/British Arts Council Photograph: guardian.co.uk Nepad and Foreign Direct Investment Photograph: BASS/Custard Factory/British Arts Council Photograph: guardian.co.uk