One of Marx's best known quotes is the one about religion being the opium of the people. See the full quote
here. Over at
The Ooze the idea is being taken a bit further and there is an accusation that a lot of churches are actually opium dens. I'm not arguing - when I see the complacency of so many Christians you know that they wouldn't take too kindly to being disturbed by
Jesus upsetting the merchants in the temple.