Anyone out and about this past weekend couldn't help but notice all the workers out canvasing for Obama's presidential campaign. If you assumed they were all volunteers, you would be wrong. They were paid, temporary workers. And several hundred of them became raucous outside of Obama's campaign offices on North Meridian Street when nobody showed up to issue them paychecks as promised. Indianapolis police had to be called to calm down the crowd. WTHR reports: Lines were long and tempers flared W