Newsnight - 01/03/2010

In-depth investigation and analysis of the stories behind the day's headlines with Kirsty Wark. The Conservative donor and deputy party chairman Lord Ashcroft has admitted he is non-domiciled in the UK for tax. Is it right that the Tories' election campaign should be funded by this kind of money? Shadow Cabinet member Theresa May speaks to the programme. A documentary filmmaker and the chief executive of a mental health charity discuss if political correctness means that society isn't willing to talk about the links between mental health illnesses and violence. Plus, Peter Marshall considers whether a lack of opportunity for open debate in the US might have led five young US Muslims to extremism.