Hasan Piker, an American pundit who has downplayed and defended Hamas’s Oct. 7, 2023 massacres in Israel and has called Orthodox Jews “inbred,” is planning to speak in the United Kingdom, where Jewish groups last week called for him to be denied a visa.“The U.K. should not be a platform for individuals who spread hatred or legitimise extremism,” the Communal Security Trust (CST), British Jewry’s watchdog on antisemitism, told The Jewish Chronicl…