Putin sworn in as riot police clash with protesters
Russia Putin
Police detain a protester in downtown St.Petersburg at the same time as Vladimir Putin's inauguration as president, Russia, Monday, May 7, 2012. Putin took the oath of office in a brief Kremlin ceremony on Monday, while on the streets outside thousands of helmeted riot police prevented hundreds of demonstrators from protesting his return to the presidency. (AP Photo/Dmitry Lovetsky)