Britain mourns murdered lawmaker; EU referendum in limbo

By Elisabeth O'Leary BIRSTALL, England (Reuters) - Britain mourned lawmaker Jo Cox on Friday after a man wielding a gun and knife killed the 41-year-old in an attack that has thrown a June 23 referendum on European Union membership into limbo. Cox, a supporter of Britain staying in the EU, was shot and stabbed in her own constituency near Leeds in northern England by a man who witnesses said had shouted "Britain first". The killing prompted campaigning to be suspended in the EU referendum, the t