Riot police officers detain a demonstrator during clashes with opposition supporters in a rally to demand a referendum to remove President Nicolás Maduro in Caracas, Venezuela, on May 18, 2016.
© 2016 Reuters
Riot police officers detain a demonstrator during clashes with opposition supporters in a rally to demand a referendum to remove President Nicolás Maduro in Caracas, Venezuela, on May 18, 2016.