In pictures : Demonstrators, An Indian farmer

A Tibetan protester set himself on fire to protest against the visit of Chinese President Hu Jintao. In New Delhi, March 26.

Protesters clash with police in the streets of Athens on March 24. The festivities of the day of the Greek Independence are closely monitored by the police, fearing that anti-austerity protests disrupt the official program.

An Indian farmer carries on his back until cucumbers Allahabad market, where it is selling on March 22, 2012.