Greenpeace reinvents itself for each campaign. It is a pressure group, tightly-focussed and constantly reinvented, but it does not enjoy the millennia-old hierarchical structure of an organised religion. There is no rule-book and no doctrine. Greenpeace, like all pressure groups, and unlike all major religions, is run by its volunteer members and is utterly and ideologically devoid of the authoritarian and undemocratic structures of religions. Greenpeace relies on its campaigns attracting members and supporters, unlike religions, which coerce the parents of infants into signing up their proteges at birth (and getting them into faith schools where possible). Religions put their feelers out in all directions, whereas Greenpeace puts its feelers out in one direction at a time. You shouldn't really be mentioning Greenpeace in the same breath as organised religion at all. Your doing so reeks of an attempt to legitimise religion by associating it with worthwhile causes. Greenpeace should either sue you or charge you a fee. And, for the sake of complete information, I have nothing to do with Greenpeace.