Dockers Mass Meeting in Trafalgar Square -- A general view of the strikers listening to speakers in Trafalgar Square this afternoon (Sunday).Thousands of striking London dock workers marched seven miles from dockland to Trafalgar Square this afternoon (Sunday) for a mass meeting. Starting from Beckton Road, Canning Town, they marched by way of East India Dock Road, Commercial Road, Tower Hill, and along the Thames Embankment, being joined at various points by other contingents. July 17, 1949. (Photo by Reuterphoto).