Other than their overzealous enforcement of copyright (and, via ContentID, more expansive than copyright rights), I'm not really aware of anything valuable being banned or censored. But maybe I'm ignorant.
1) Countless medical doctors and researchers discussing COVID-19 vaccines and therapeutics like Ivermectin have been banned and censored. This includes world famous, Nobel Prize winning researchers.
Here are some dead links:
1) Discussing Ivermectin (proven by dozens of double blind randomized trials to be 85% effective at treating COVID: https://youtu.be/f0FmjsWwFXs
Pardon me if that sounds rude, but it is unfathomable to me why anyone would attempt to watch scientific/or medical discussion on YouTube (or any social media, for that matter).
My alarm bells start ringing if I read a paper and the authors are overly committed to pointing out the prestige of the institutions or seem to optimize for citations. What possible use could you get out of the discussion of "science" on a platform where flashiness of the thumbnail, shortness of message and flamebait are directly related to your income?
These videos weren't appeals to authority or optimized for citations. They were scientific discussions of therapeutics for COVID as well as the mRNA therapies and what's wrong with the current approaches.
Youtube targeting content based on income and being "flashy" doesn't make their egregious censorship of inconvenient information on their platform OK.
Here are some dead links:
1) Discussing Ivermectin (proven by dozens of double blind randomized trials to be 85% effective at treating COVID: https://youtu.be/f0FmjsWwFXs
2) Interview with Dr. Malone, the guy who invented mRNA vaccines: https://www.youtube.com/watch?v=-_NNTVJzqtY
3) A US Senator gets canceled: https://www.nbcnews.com/politics/politics-news/youtube-suspe...
4) Half of this guy's videos are canceled: https://www.youtube.com/channel/UCAWCKUrmvK5F_ynBY_CMlIA
5) I'll stop here.
Here's a good video on the censorship of COVID on youtube and others: https://www.youtube.com/watch?v=COyQVUhtMDQ
That's just COVID. They suspend anything that isn't mainstream politics. It's Orwellian, and normies have no idea.