"That difficulty is behind the denialism afflicting millions created by ignorant and selfish political opportunists."

It's not like denialism was created by "political opportunists." After all, even you say they are just opportunists -- they ride the wave and take advantage of the denialism that already exists. The problem is the average citizen who does not want to change.

https://senderspike.medium.com/dont-blame-propaganda-5cd216735c44