Sierra Club is pro La Raza and he felt that Greenpeace became a tool for left wing politicians.
Right. No decent anarchist would belong to Greenpeace.
He was kicked out of Greenpeace by a vote of 11-1, with his vote the '-1'. Here is what GP says about his tactics:
Disabling a ship at sea in the Antarctic, regardless of how much one may object to its activities, is not only a callous act of disregard for human life -- it's courting an environmental disaster in one of the most fragile environments in the world.
Such tactics are not only dangerous to the whalers, they are dangerous to the cause of stopping Japanese whaling.