For me it's an aggregate. 

I consider:

A) the source, have they been right before? Are they fake news/biased, do they have an agenda? 

B) how the information is stated. "40% of Americans ____" is automatically bullshit because there's no way they polled a meaningful % of the population and no way is that clean data. 

C) Does it make sense on what I already know?  "Trump has ties with Russia" well that doesn't make any sense vs "Deaths increase by 5%".

D) Does it matter? Usually no lol 

 I love it when you say: it is unlikely they can pull a clean data" LOL this is like music to my ears as a data consultant. Yes, I am 💯 with you. What you did there was critical thinking. Sadly, this is now a rare skillsets, or at least what the centralised platform is trying to tell us! 🤓