The most recent one to implode is "the 1/6 insurrection led to the death of a police officer." That is now absolutely not true. Assuming you believed that (or the "insurrection" meme) is what happened. Being a natural skeptic, I didn't believe much of the official nonsense 'news' that was shared. After all, I knew many people who were there that day, and none of them were in the Capitol, all were outside protesting. While appalled at the few who did rush the building and do damage, they all said it was a small number by comparison to the group outside, which was peaceful.
Other Progressive narratives are breaking down, too, though. Progressive stronghold Portland is still a hot mess. Pulitzer Prize winner Andrew Cuomo's mismanagement of Covid is set aside for a more Progressive-friendly sexual misconduct. Maxine Waters has in the past, and is now, inciting 'insurrection' and won't face impeachment. Gaffe Machine Biden keeps putting his foot in his mouth. His son is on a make-nice tour answering softball questions to clear his image. Wikileaks published emails showing Dominion's legal firm offered assistance to the Clinton campaign in 2016. All this dirt is readily available and very little is going to make the mainstream news (frankly, I'm shocked the Russian bounty story's dismissal made it to the mainstream, as that was one of Biden's memorable hot buttons).
It's hard to understand why anyone pays attention to mainstream news. DeSantis' treatment is such that one can only shake their head in wonderment at the brazen nature of the lies and deceit. Living in one of the few (there really aren't many - just look at the map of popular votes for all the blue sections) bastions of Progressive thought, I am often stunned at what people are willing to listen to and believe. Comfortable lies rule the day.
Say what you want about alternative news sources being 'fake news'. Determining what's real in the supposedly 'credible' media is a feat in itself.