Des Moines, UNITED STATES
An Occupy Des Moines protester sits in the back of a police van after being arrested for blocking the...
An Occupy Des Moines protester sits in the back of a police van after being arrested for blocking the entrance of Republican presidential candidate and former Massachusetts Governor Mitt Romney's office in Des Moines, Iowa December 28, 2011. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS BUSINESS CIVIL UNREST)