The poison behind the Ground Zero mosque furore

Who would have thought that the most successful joke in the history of Comment is free could become a template for far right hate groups in the US? Yet Ariane Sherine's atheist bus ads now have a grim imitator in New York, where a group calling itself Stop Islamisation of America (SIOA) has put up bus ads with a picture of a plane flying into the twin towers on one side, and on the other, an image of the proposed Cordoba centre.

The two people behind SIOA are Robert Spencer and Pamela Geller, who, between them, run two flourishing and hate-filled sites, Jihad Watch and Atlas Shrugs, which link into an undergrowth of far-right websites in Europe, including the skinheads of the English Defence League, but also to respectable rightwingers such as Douglas Murray of the Centre for Social Cohesion, and even the Catholic Herald.