The phrase "denial machine" refers to an entity or system that deliberately denies or rejects certain information or ideas, often in order to protect its own interests or maintain a particular belief or agenda. Full definition
The individuals, organizations and corporate interests who comprise the «climate denial machine» have caused harm and have slowed our response time. (polluterwatch.com)
The «global warming denial machine» was alive and well in 2013, and continued to have an impact on public opinion regarding the seriousness of the problem. (climatesciencewatch.org)
The climate change denial machine has been up and running since at least 1988, 20 years longer than the story suggests. (businessinsider.com)