Trash is the real climate problem, not cars, gas stoves and heaters. Focus on littering, cleaning up our environment, and for many, this starts with cleaning up their own house, yard, neighborhood, and city. I’ve traveled to 50 countries and this is a near universal problem outside the US. And, here, it is the problem in illegal immigrant communities. Trash everywhere. Filthy.
Japan seems to have a good handle on handling trash and keeping their streets clean. Despite being one of the most densely populated nations on earth.
Remember this?

From 'back in the day' when most environmentalists were about good stewardship and wise use.