So here comes the acid test: is Jacqui Smith, as she proclaims, an enemy of extremism in all its forms, or a cowardly hypocrite? In October, the Home Secretary announced 'tough new measures' to deny entry to Britain to anybody 'engaged in fostering, encouraging or spreading extremism and hatred.' In recent weeks she has put them to use by banning a Dutch MP with hugely controversial views on Islam, and a notorious anti-gay US preacher.