@pleonasm - To some extent I think a lot of environmentalists are being vilified by certain vocal members of society. When I hear the word environmentalist, I think "global warming" and I know for some people those three words together spell out "nut job".
That's largely because of the way it's been portrayed in the media, as a bunch of hippy nonsense.
In fact a lot of the people who research global warming wouldn't even consider themselves to be environmentalists. They just know a catastrophe when they see one.