Broken windows fallacy!

If they really want to shame people who are contributing more to CO2 emissions, shouldn't they shame people who are having children? Reproduction will lead to more energy consumption than you could ever compensate for by house insulation or cycling more.

when you get right down to it they don't care about anyone but themselves.

I came to libertarianism as a political system which is the best for the poorest in the world. Though the above comment talks about the poor, it's pretty clear he's only talking about the poor in his country. If you really want to talk about the poor it's not anyone in the US or the first world. Libertarianism by advocating open borders and open trade, would the most quickly allow the real poor in the world to escape poverty by allowing them to sell their labor to the rich world.

If you really care about the poor I don't think there's anything better that you can do than this.