People do now believe in what they want to believe in, no matter what the news or expert say. Needless to say, what they want very often ("coincidentally" of course) happens to match perfectly with the economic and policy interests of a few powerful people or corporations.
It's a waste of time and effort trying to rebut these people, because they deliberately try to stray away from logic (where they know they would often lose) and always attempt to move debate to a plane of emotions and feelings, where any kind of confrontation becomes basically impossible.