After Rahmaan Mohammadi, 17, organised a fundraiser for Palestine at his school in Luton, he found himself under investigation by the anti-radicalisation programme Prevent, with visits to his home by the police. He finds out more about the strategy and its implementation and speaks to others who have been investigated as well as MPs and community leaders

This video was amended on 26 August 2016 to remove inaccurate statements about the Prevent strategy which were wrongly attributed to Prevent’s past and present leaders