Leon Levinstein
Man Gesturing with Hand above Crowd, Speakers' Corner, Hyde Park, London (1950s or 1960s)
Metropolitan Museum of Art NY
John Gay
A young man at Speaker’s Corner in Hyde Park, London. 1960–1962
From a forthcoming exhibition at the Tate Britain 30 June – 27 September 2020
After Empire Photographing Britain and the World
Soviet exiles gather to march on Soviet Embassy 1975
You can buy the original photograph on Amazon