In this image released by Greenpeace International , Kumi Naidoo, the Executive Director of Greenpeace International, speaks to activists at the International Convention Center in Durban, South Africa, Friday, Dec. 9 2011. Dozens of activists, led by Greenpeace Executive Director Kumi Naidoo, staged a noisy demonstration outside the main plenary of the COP 17 conference, but UN police formed a phalanx around the door and blocked the crowd from entering the hall. (AP Photo / Shayne Robinson, Greenpeace) NO SALES, NO ARCHIVE, EDITORIAL USE ONLY