Argentines marching in Buenos Aires protesting against the death of Alberto Nisman
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Argentina: Mass rally in Buenos Aires over Nisman's death

Hundreds of thousands of people in Argentina have marched through Buenos Aires to demand answers over the death of a state prosecutor.

A month ago, Alberto Nisman's body was found with a gunshot wound to the head, just hours before he was due in Congress to present evidence against President Kirchner.

The BBC's Wyre Davies was at the protest.

Go to next video: Mass rally in rain over Nisman death