An anti-government protester holds a handful of ammunition in front of a poster showing Argentine-born Cuban revolutionary Ernesto 'Che' Guevara, during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Taiz. (AP)

Tourists watch as the water is discharged at the Xiaolangdi Reservoir on the Yellow River in Jiyuan, Henan province, China. (Reuters)

Rubbish is set on fire during a protest in downtown Naples. The chronic problems over waste disposal in Italy's third-largest city have re-emerged in recent days with thousands of tons of rubbish piled up in the streets. Furious residents clash with police as regional authorities try to reach an agreement on moving the garbage to dumps outside Naples. (Reuters)

A young demonstrator attacks an armored police vehicle during a stand-off between loyalist and nationalist demonstrators in east Belfast, Northern Ireland. (Reuters)

Riot police attack a demonstrator during a protest in Senegal's capital Dakar. President Abdoulaye Wade has withdrawn a proposed change to the country's electoral law, the government said, after the bill sparked clashes between riot police and protesters in the heart of the capital. (Reuters)

A restorer adds the final touches on the ceiling of a balcony of the big hall of the Bolshoi Theater in Moscow, Russia. The historic building of the theater is expected to reopen in the fall of 2011 after a long reconstruction. (AP)