Those concepts of "truth" and "fact" may feel like absolutes but are a product of the observer. When people with similar beliefs/cultures/backgrounds/goals observe the same thing then it's easy to agree on what's true and what's not true. In general I think it's not a good look to tell somebody that the world they perceive is untrue, and that's why I support free speech as basic a human right :)
we're not talking about some highbrow philosophical disagreement or argument about cultural values, we're talking about very basic facts, which have the benefit of actually having truth value regardless of whatever people think.
The pandemic is a pretty good example. There are actually a lot of protocols and behaviours that have shown to make it so hundreds of thousands of people don't have to die regardless of what timezone or nation or religion or political party you're in, yet aided by constant social media barrage the US is so divided it can't even manage to enforce that.
