Amnesty International-the global human rights watchdog - marks its 50th anniversary on Saturday with the launch of a 'Global Call to Action' designed to help tip the scales against repression and injustice.With events to be held in more than 60 countries in every region of the world, the anniversary comes against the backdrop of a changing human rights landscape, as people across the Middle East and North Africa courageously confront oppression, tyranny and corruption - often in the face of bloodshed and state violence.
Amnesty International marks 50th anniversary on Saturday -