Deep Green is Rex Weyler's monthly column, reflecting on the roots of activism, environmentalism, and Greenpeace's past, present, and future. The opinions here are his own. And the fuses that threaten to set it off Three...

This week, hundreds of activists – including Greenpeace USA Executive Director Phil Radford – were arrested as part of a protest against the proposed Keystone XL tar sands oil pipeline. The protesters, many wearing ‘Environmentalist...