ANALYSIS-After the crisis, a worldwide rise in unrest?

* In authoritarian states, protesters want more freedom

* Financial adjustments bring anger in Western economies

* Vicious cycle of inflation and unrest

By Peter Apps, Political Risk Correspondent

LONDON, Feb 28 (Reuters) - With the Middle East in turmoil, other authoritarian states jumpy and post-crisis economic pain prompting protest in western Europe and elsewhere, some suspect a systemic rise in worldwide unrest might just be beginning.

Instability in the already volatile oil-producing Middle East could produce a feedback loop where unrest pushes up energy prices, fuelling inflation and deepening discontent both in the region and around the world.

In most countries, the so-called "misery index" -- an aggregation of unemployment and inflation long seen as a warning of protest and instability -- is pushing higher.

"After an extended period of economic growth and political apathy across the developed and emerging worlds, we may have reached a new political cycle -- one where populations take out their grievances on their leaders and their associates," wrote Citi political analyst Tina Fordham. "This won't be limited to the emerging world."