Politics defines social and economic issues even though the facts point another direction.
Politics is a mass group-think; political expression defines the way a nation thinks about itself.
Example: In the UK, the government claims to be meeting the recession with all sorts of austerity measures. The nation consequently thinks spending is down, services are down, and thus things are tough. But the reality is that government spending, even real spending, is not reducing.
You think you’re in a recession if you’re told you’re in a recession.
Political expression helps define context and reality for citizens and politicians alike.