Lots of people with noble goals have done horrible things to bring them about. For instance, it's hard to miss how Communists ended up rather consistently slaughtering the poor people that Communism was supposed to help, no?
Would that be Evil Big Oil? And Evil Auto Companies? (Or are Auto Companies not not evil, just Big Oil?) Companies that employ thousands of people around the world, providing families with livelihoods and customers with products that make their lives better, if not actually making them possible. (Heating homes in winter keeps people alive, for instance.) And what do you mean by "propaganda"? Pointing out that Al Gore's family uses more energy, for instance, than 10 or 20 typical families in Tennessee put together? (Or whatever the numbers might actually be.)
So... back to "environmentalists"? Where do they get their money? And why do they get it? Or are we merely supposed to believe that they're all on the up-and-up just because they're "environmentalists" with noble goals? That sounds like it might be a good way for clever folks to hoodwink the unsuspecting.