A political rally held by the fascist Oswald Mosley in 1959
The following is taken from Wikipedia
Shortly after the 1958 Notting Hill race riots, Mosley briefly returned to Britain to stand in the 1959 general election at Kensington North. Mosley led his campaign stridently on an anti-immigration platform, calling for forced repatriation of Caribbean immigrants as well as a prohibition upon mixed marriages. Mosley’s final share of the vote was 8.1%
Two years later when working for the Daily Mirror, Alisdair caught another more satisfyingly positioned image of Oswald.