The break down is simple.
People who believe in AGW: scientist, academics, those who have studied the topic, generally more educated.
People who don't: religious types, uneducated, fox news viewers.
That is not stereotyping or generalizing, it's fact. When you survey people on their beliefs on AGW almost without fail they fall into those groups and under those beliefs.
Everyone should ask the Pacific Island nations who are losing territory due to sea level rise if AGW is real, or the people of Greenland whose Glaciers are melting if AGW is real. These aren't extreme weather events hyped by the media as AGW deniers like to think, these are climactic events caused by long term warming of the earth.
AGW deniers, show me proof it isn't happening. Show me a peer reviewed study that it isn't happening? In fact show me thousands, because that is how many show it is. Including one with my name on it I worked on under a professor as an undergrad in college. We had no agenda, no politics, no money to be made by showing it was true. We wanted to know for ourselves.
The long we deny it, the longer we keep set in our ways the more damage we do. As far as I can tell it's the deniers who have the most money to lose here. Their propaganda campaigns are funded by big coal, big oil, and other fossil fuel interest.
For the record, snow in Rome is not proof of AGW it is merely a singular weather event that may or may not be out of the ordinary. Those have always happened, and always will.