The unmasking of the extremist seen in the Islamic State beheading videos has provoked renewed debate in the UK and elsewhere about how extremism in Muslim communities can be prevented and tackled. HARDtalk's Zeinab Badawi talks to the Conservative peer Baroness Sayeeda Warsi, the first Muslim to sit in the Cabinet before she resigned last year over government policy on Gaza. As a former minister for communities and social cohesion, why does she believe there's a lack of trust between the government and British Muslims?