What about Canada? The historical influence of liberal Protestantism is undeniable. The social gospel movement drove political change from the 1930s to at least the 1960s. People such as J. S. Woodsworth, Tommy Douglas and Stanley Knowles – all of them Protestant ministers — moved Canada in a humane and social democratic direction. But that flame has been burning less brightly in recent decades and a more right wing religious presence now prevails in the halls of power. A well-connected minister of my acquaintance says that the Prime Minister has yet to meet with United Church leaders since he was first elected in 2006. But religionists of a more conservative persuasion appear to have widespread access to Parliament Hill.
The complaint about Liberal Christians is that their faith is a "thin gruel". But I don't know why that has to be. Throughout history, Liberals have known how to kick ass. Liberal Christians can learn that trick again. We Liberal atheists would be happy to show them.