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.
I'd rather not. I'm wary of those. But that is certainly an interesting thought. It's like the Tenth Man approach. In case it's not real (heard it from the movie WWZ lolol) it's if everybody is in agreement, the tenth dude has to disagree by asking the questions nobody else asked.
It is kind of like the movie 12 Angry Men. The one juror holdout gets everyone to change his mind by simply asking questions.
I have not seen the remake, but the original is a great movie.
Great analogy.