A fact is a datum that's either demonstrably true... or it's false. The temperature is either 98 degrees, or it's not.
Where we start to run into problems is when we try to draw conclusions from those facts. Yes, it's 98 degrees, and yes, today is warmer than yesterday, and yesterday is warmer than it was the same time last year. But does that mean anything?
Climate scientists will point to those facts and others and use them to theorize that the earth is warming and that runaway CO2 emissions are the cause. But the vast majority of people are simply incapable of understanding the science involved in reaching that conclusion and as such must trust someone to interpret that data for them.
In other words, they're trusting that someone will tell them the Truth.
Unfortunately, there are other people in business and in positions of power for whom that truth could be... inconvenient.
So they tell people that the science is wrong, that the conclusions drawn from the facts are wrong, and just for good measure they say that those scientists have a vested interest in protecting their cushy university jobs.
All of which becomes their version of the Truth.
Truth (with a capital T) isn't based on fact. It's based on belief.
Who do you believe is telling you the Truth?