Maybe I'm just going to be petty and get caught up in semantics, but I have always resented the word "environmentalist."
It makes an "Us and Them" separation. It implies that one is either against the environment or s/he is not. Let's ask ourselves, who is really "against" the environment? No one. People just have different solutions.
In that respect, I assume, David, that you are referring to the Limbaugh definition of environmentalist, meaning, "whacko liberal." Please let me know if I am reading you right.
Based on my philosophies, I would never find myself agreeing with the far left when it comes the environment. Particularly, I find the extremists who advocate environmental terrorism some of the vilest members of society. I also support controlled burns and drilling in Alaska, ideas some on the far left would find abhorrent.
I think I'm about to ramble off topic here, so I'll quiet down and let someone else post