Aeschylus

In a pine tree behind me, an eagle waits out the rain, hunched into himself, brooding. Crows squabble, a murder chasing a raven. Seals cruise the lines of fishing nets bobbing in the water, hoping for an easy meal, the tender bellies of salmon.

Ideologies are ways of organizing large swaths of life and experience under a set of shared but unexamined assumptions. This quality makes an ideology particularly hard to see, at least while it's exerting its hold on your culture. A reigning ideology is a little like the weather: all pervasive and virtually inescapable.