In a passionate and sometimes angry debate, black Brazilian activists insist that slavery's legacy of injustice and inequality can only be reversed by affirmative-action policies, of the kind found in the United States.

ECONOMIST: Race in Brazil

Somewhere in the wild or in a busy urban space, you find banners unfurled by a cadre of passionate activists, sometimes accompanied by a larger crowd or by a sort of playact depicting the impact of the activities of the targeted ecological criminal.

FORBES: Op-Ed: Greenpeace At 40: What Now?

But the tone is tactical and managerial - in contrast to the passionate, extremist image sometimes attributed in the West to the Islamists.

BBC: Africa