200 Greenpeace supporters protest in central Sao Paulo, to demand the release of the Arctic 30.

Tens of thousands of people have taken part in an emergency global day of solidarity with the 'Arctic 30' in over 135 locations in 45 countries throughout the world. 28 Greenpeace International activists. including a freelance videographer and photographer, were charged with piracy this week by a Russian court, following a peaceful protest against Arctic oil drilling at a Gazprom oil platform in the Pechora Sea.