The story of a race riot that broke out in Glasgow, during the height of Red Clydeside militancy, when around 30 black sailors were chased out of the hiring yard by a mob of white sailors. Yet, rather than a spontaneous outburst of hatred, it was actually the culmination of nationalist and anti-migrant politics promoted within working-class organisations (such as the Independent Labour Party and the British Seafarers's Union) both before and even after the events.