They say x, ask for where they heard about x. They say from y news organization, ask the source for y. If they say z, if z is actually an actual document or otherwise, ask them where in z does y claim x is true.
If z is just another news organization, keep going until they provide (or don't provide) an actual document. If they can't procure an actual document, send it yourself. If z is just another video cIip, ask them for the whole video. Provide them the entire video if they can't.
Do not try to antagonize. Just simply ask the questions as if you were trying to understand their point of view, to learn something we might not have heard.
When I thought of 'the masses' being mind controlled by propaganda it was always some invasion of stormtroopers. I never thought of my friend of 20 years dropping me because 'actions have consequences' or insisting on everyone wearing N95s outside. I never thought my inlaws would go from being 100% against a medical treatment to 100% for it over the course of a month, even pushing it on me and my child. It makes me afraid of the media, seeing how it can blow people around like the wind.
What they really did was leverage our fear response, and advanced the idea over decades that everything has to be 'safe.' More than that, that the government is the one entity that can make everything and everyone safe, and decides what safe is, which is a total fallacy. But people fell for it anyway