Humanism, Secularism, ect.
One area of secular blindness (one of many) is their inability to see how religious they are being. Having defined religion quite narrowly as church buildings and altars, they are utterly incapable of seeing the all-pervasive and quite religious nature of their frenzies and crusades. The problem with invisible religions like this is that one cannot watch them to see if they are going bad. And so they don't. They do not see Tetzel in carbon offsets. They do not see shuning in the treatment the neighborhood gives the guy who doesn't sort his garbage according to the dictates of the regulatory bishops. They don't see a fierce imposition of morality in their crusades for the sake of saving us all from climate change. They do not see blasphemy laws in thought crimes legislation. They do not see their religion in everthing they do, and this is because idolaters are blind. - Doug Wilson