When I was in a freshman in college one of my bible study leaders had spent some time doing ministry abroad. He went to the sort of place where people don't have electric lights, let alone TVs or radio. Their knowledge of God was similarly darkened. And he told them about the gospel because otherwise they wouldn't ever hear the message.
When he came back, he said he was made physically ill because of the ease at which Americans could learn about Jesus. You can go to any bookstore and pick up a bible. You can hear about him on any radio or TV, even if you're watching a late night comedy show.
Stephen Colbert is a Catholic Democrat by the way. And the end of that bit reminded me of the last verse of Tom Lehrer's excellent song National Brotherhood Week.