Why should we live in detached single family homes with running water while the poor in Cameroon and Bangladesh can't afford to because of American greed and selfishness?
I agree that the "global warming lemmings" need to change their strategy.
Most Americans have not been deceived by their pseudo-scientific arguments and most Americans have not been converted by their "holier-than-thou" moralistic Jeremiads.
So I think it's time for those lemmings to try something else: "leading by example"!
For example, if, at the end of this "Ethics" conference, all of the participants commit suicide together in a well-orchestrated photo-op, then we would finally KNOW that they really WERE "serious" about their cause.
This bloody, but "ethical", rejection of what they see as an un-worthy world would (no doubt) inspire a sense of "guilt" in some, who might (as a result) downsize from their SUVs to Vespas -- thereby SAVING our world!
And there is no downside here, since these "ethicists" would, through their self-sacrifice, entirely CEASE their own participation in the conversion of carbohydrates to CO2 that is soooo typical of living organisms.
Let's take care though to ensure that the bodies of these noble "ethicists" are NOT cremated.