I agree that denial is a problem at both the individual level and the systems level, and both need serious attention and effort.
https://www.theguardian.com/environment/2017/jun/09/lets-expose-everyday-climate-denial-heres-how
Here’s a starting point:
“Do you believe?” is the wrong question to ask public officials about climate change http://google.com/newsstand/s/CBIwpYCr2Dk?oc=wa
I like the recommendation that, instead of asking if people believe in climate change (which implies that this is something optional that we can choose to accept or not), the questions should be focused on whether people understand the scientific consensus, and what they are going to do about it. 🙂