The whole climate change CO2 thing has made all of the environmentalists focus on stuff that doesn't matter (and helps those in power) instead of the stuff that matters. Taking care of the environment is a good thing, but somehow most environmentalists act emotionally and typically make things worse instead of better. In the best case, they don't make much difference.
Discussion
Everyone wants their lives to mean something. With the decline of religion, people are dedicating themselves to causes like climate change and fighting racism, and it doesn’t really matter if their efforts are counterproductive, or if they could do more good by doing something mundanely productive. That’s my hypothesis, anyway.