Broadly speaking, sure. But I can't name any crisis that was solved by people individually deciding to purchase less of a bad thing. US slavery wasn't ended by

Broadly speaking, sure. But I can't name any crisis that was solved by people individually deciding to purchase less of a bad thing. US slavery wasn't ended by people boycotting goods produced with slave labor. We didn't go to the moon by holding a fundraiser. The ozone hole was repaired by banning the harmful chemicals, not by consumers deciding to pay more for refrigerators that didn't use CFCs. Asking consumers to research every product they buy for its "carbon footprint" (including the whole supply chain and transportation) and modify their purchasing decisions accordingly is doomed to be ineffective. Some people will be very passionate about it and make a big change. More people will avoid some terrible offenders. And most people will make only small changes that don't inconvenience them much, because they already have 90 other things to worry about in their life. (And now that it's been politicized, you get people "rolling coal" and purposefully creating extra emissions to... stick it to the libs, I guess.)