Even if one concedes that the climate is 'rapidly changing' solely or primarily because of man-made action, it doesn't follow that those changes will lead to catastrophe for people everywhere, particularly those in the first world.
Having said that, Phoenix hitting 100 degrees for 100 days in a row doesn't support 'rapid climate' change occurring when the reference is the past 150 years. To put it another way, suppose the planet is warming (for whatever reason) - eventually we would get 100 days of 100 degrees in Phoenix, right? Who are you to say that it's rapid or unnatural? Cycles happen - neither of us can say this didn't also happen 500/1000/2000/10,000 years ago. I live in Melbourne and the winter we just had (here in the southern hemisphere) was the coldest I can remember. The year before was mild. Variance happens, in both the short term and the long term. Hysteria is laughable.
I'm not saying we shouldn't take care to pollute as little as is reasonably possible, but promulgating wholesale societal change is never going to get the Green left (or whatever they prefer to be called) what they want.