"Mosley’s British Union of Fascists (October 1932) won some important early converts, like Lord Rothermere, publisher of the mass-circulation London Daily Mail. Mosley’s movement aroused revulsion, however, when his black-shirted guards spotlighted and beat up opponents at a large public meeting at the Olympia expedition hall in London in June 1934. Hitler’s Night of the Long Knives, at the end of the same month, provoked the departure of 90 percent of the BUF’s fifty thousand members, including Lord Rothermere. At the end of 1934, Mosley took an actively anti-Semitic track and sent his Blackshirts to swagger through London’s East End, where they fought with Jews and Communists, building a new clientele among unskilled workers and struggling shopkeepers there. The Public Order Act, passed soon after the “Battle of Cable Street” with antifascists on October 4, 1936, outlawed political uniforms and deprived the BUF of its public spectacles, but it grew again to twenty thousand with a campaign against war in 1939. Mosley’s black shirts, violence, and overt sympathy for Mussolini and Hitler (he was married to Diana Mitford in Hitler’s presence at Munich in 1936) seemed alien to most people in Britain, and gradual economic revival after 1931 under the broadly accepted National Government, a coalition dominated by conservatives, left him little political space."