There is evidence that the climate data has been manipulated to show what the warmists would like to see. Tony Heller of Real climate science uses their data to show how this global warming trend has been manufactured. https://www.youtube.com/watch?v=hElTSfQEdsk
Regarding the concentration of CO2 is responsible for the imaginary global warming trend, others have proved that anthropogenic CO2 is a very weak driver of climate. On the order of a fraction of a degree percent in temperature forcing. http://www.realclimate.org/index.php/archives/2006/01/calculating-the-greenhouse-effect/
My point though is more along these lines: What if this is a scam? What happens when people do not apply critical thinking skills and simply follow along with the media and experts without questioning?
And just to reassure anyone in doubt, I am a skeptic. Not just of anthropogenic CO2 driving climate change but on almost everything. I don’t believe anything without proof. And the evidence of your proof must be based on solid, accurate data, analysis, facts, calculations and observations. I don’t care how many people believe otherwise. Science is not done by voting.
Science will not be subverted for long. The scientific method remains our greatest tool.