The world is changing, you feel threatened by those changes, you feel that you had no responsibility in bringing them about but that they are solely due to the foolishness or treachery of others.

You feel so certain of this that you think that any action required to set things straight is acceptable, justifiable, even imperative. And you are convinced that you, and people who share your moral and intellectual gifts, have an obligation, even a duty to make this happen. And those who oppose you must be stopped, and punished.

That is narcissism and paranoia. I'm better than they are, and they are out to get me. It is the source, the fountainhead of fascism. When the bourgeoise doesn't get what it wants, when it feels what it has earned is being taken from them, it throws a tantrum and goes on a rampage. It goes looking for a scapegoat because it cannot accept that its misfortunes are due to its own shortcomings, the very people they emulate, or perhaps just the Brownian shuffle of history. Those who don't find that grim view of the world self-evident must clearly be a part of the evil conspiracy behind it.

And you my friend, are a classic case. Get you off politics, and you are a charming, clever, likeable fellow, a person anyone would be proud and happy to have as a neighbor or friend. But when you start brooding about why the world has gone to shit, you metamorphose into someone very different.

There's a pop psychology term for that, too. Schizophrenia.