Now that downloading the wrong kind of material can get you a prison sentence, is it time to challenge an encroachment on a fundamental liberty, or does the internet need tighter controls to combat the influence of extremism?

Index on Censorship presents a debate about the limits of free speech online, with AC Grayling, Panorama’s Shiraz Maher and Dr Ian Brown of the Oxford Internet Institute, chaired by Index editor Jo Glanville.