A) Yes, people are being misled. This is, and rightfully should be, a scientific issue. Unfortunately it's been coopted as an economic and therefore political issue. Those who perceive it as a threat to their political ideology or economic interests are investing heavily in cynicism to try and prevent action from being taken.
B) I don't disagree that this is an international issue, that's why the UN's involvement makes sense. Except you've been trained to fear the UN by the same cynical interests that wish to now prevent action on climate change. Yes, all those nations we've outsourced cheap manufacturing to avoid our own domestic pollution and labor laws have built their economies around literally doing our dirty work. It will take an international body to negotiate a method of balancing the needs of the people now (social, economic) with the needs of the people of the next generation who will really inherit the mess we've made and continue to make.