Francis in America: a radical pope journeys to the 'heart of the machine'

On his Latin American tour he called unfettered capitalism 'the dung of the devil', but he will face a very different political landscape in Washington

Anti-capitalist, anti-war and anti-oil activists who question the world order don't usually get much of a hearing inside the halls of the US Congress, where most lawmakers have little patience for views deemed too far outside the mainstream.

But if there is one thing to be gleaned from Pope Francis's trip to Ecuador, Bolivia and Paraguay, it is that an exception may have to be made in September. When the Argentinian pontiff arrives in Washington for his highly anticipated visit, his message will be just as contentious and radical as any protester calling for change.