BIRSTALL, UNITED KINGDOM - JUNE 17:  Prime Minister David Cameron (L) and Labour Leader Jeremy Corbyn arrive to pay their respects near to the scene of the murder of Jo Cox, 41, Labour MP for Batley and Spen, who was shot and stabbed yesterday at her constituency surgery, on June 17, 2016 in Birstall, United Kingdom. The Labour MP for Batley and Spen was about to hold her weekly constituency surgery in Birstall Library yesterday on June 16, 2016, when she was shot and stabbed in the street. A 52-year old man is being held in Police custody in connection with the death.  (Photo by Christopher Furlong/Getty Images)