A number of senior politicians have joined thousands of people gathered outside Downing Street for a protest against antisemitism . Organisers of the rally called on the British public to “face down extremists” after a series of arson attacks at Jewish sites in London, as well as a double stabbing in Golders Green that is being treated as an act of terrorism. Politicians from a number of political parties took the stage to speak to the rally in London , where they were met with a mixed reception. Kemi Badenoch, leader of the opposition, was met with raucous applause and cheers, while cabinet minister Pat McFadden was jeered and booed as he spoke on stage. The chief rabbi, Sir Ephraim Mirvis, also spoke at the event, telling the crowd it is “unacceptable that poisonous antisemitism has become normalised in the UK”.…