"Do you believe in global warming?"
The climate denial propoganda machine wants to make sure that climate change gets perceived as a concept rooted in belief. Why? Because it secures their narrative and keeps them from having to talk about the real science of our climate. If they can make sure you believe in anthropogenic climate change, they can manage to avoid the facts.
Believing in climate change, allows them to practice their favorite denial technique: throw out the baby with the bathwater. In the example below, they throw out the science with Al Gore.