Mainstream discourse

Over at Daily Kos, ThereIsNoSpoon introduces us to the Overton Window, which is a powerful VRWC propaganda technique.

the GOP knows that the middle DOES matter. They know that by playing to their base in very well-crafted ways, they can shift the very definition of what the middle is. By introducing radicalism into the public discourse (and taking initial heat for it), whatever used to be radical within this context becomes moderate by comparison.

Spoon argues that the most Democrats badly misunderstand the implications of this for how they should play to their base.