Politicians who insult others by any means should have not been elected in the first place. However, I believe there is a difference if you're stating a fact but it should be addressed in a nicely manner.

Also the prevalence of fake news massively influenced others believe in what these people wanted the society to believe. If you're just an ordinary citizen and don't know much knowledge about fake news, you won't be able to identify which is true.

It's hard to believe news today but it is good that there are schools starting to teach students how to identify a fake news. As much as language can be learned, being deceptive can also be learned just as how people has freedom to their opinion.