1. Unrest in Venezuela

2. Opposition students run from police and past burning trash as they protest against President Nicolas Maduro's government in Caracas February 12, 2015. REUTERS/Jorge Silva

3. An opposition student is carried away after being injured during a protest against President Nicolas Maduro's government in San Cristobal February 12, 2015. REUTERS/Carlos Eduardo Ramirez

4. Opposition students block an avenue with a truck loaded with rocks as they protest against President Nicolas Maduro's government in Caracas February 12, 2015. REUTERS/Jorge Silva

5. Opposition demonstrators talk to police during a march against President Nicolas Maduro's government in San Cristobal February 12, 2015. REUTERS/Carlos Eduardo Ramirez

6. Police run amidst tear gas as they clash with opposition students during a march against President Nicolas Maduro's government in San Cristobal February 12, 2015. REUTERS/Carlos Eduardo Ramirez

7. Opposition students march next to national guards during a march against President Nicolas Maduro's government in Caracas February 12, 2015. Reuters/Jorge Silva

8. Opposition students march against Venezuelan President Nicolas Maduro's government in Caracas February 12, 2015. REUTERS/Jorge Silva

9. An opposition student is carried away after being injured during a protest against President Nicolas Maduro's government in San Cristobal February 12, 2015. REUTERS/Carlos Eduardo Ramirez

10. Opposition students march against Venezuelan President Nicolas Maduro's government in Caracas February 12, 2015. REUTERS/Jorge Silva

11. A man walks with a kite in front of national guards during a march against Venezuelan President Nicolas Maduro's government in Caracas February 12, 2015. The words on the kite read: "Feb 12, 2014-2015, impunity, persecution and torture". REUTERS/Jorge Silva

12. A woman protests in front of national guards during a march against Venezuelan President Nicolas Maduro's government in Caracas February 12, 2015. REUTERS/Jorge Silva