Students are today holding a meeting at Middlesex University in support of its student union president who was suspended for refusing to cancel a debate with the controversial Islamist group Hizb ut-Tahrir. Keith Shilson was escorted from the campus last week by university security after he refused to cancel the question and answer session with the group, which the prime minister is considering proscribing as part of the government’s crackdown on extremism. The move by the university’s vice-chancellor Michael Driscoll to ban the debate came days after the education secretary, Ruth Kelly, told vice-chancellors they would have to play a part to tackle extremism on campus.