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Re:YouTube’s Rabbit Hole of Radicalization [pdf] by wcoenen on Sunday December 29, 2019 @07:35PM (#21909755)
> What do I need to watch to get out of this inappropriate category

Nothing, just tap the three dots on wrongly recommended videos and then "not interested" or "don't recommend channel". The recommendation algorithm might need more than one data point but it will catch on eventually.

Re:YouTube’s Rabbit Hole of Radicalization [pdf] by duskwuff on Wednesday January 01, 2020 @05:46PM (#21931274)
The recommendation algorithm can be really bad at taking negative feedback. It'll sometimes stop recommending videos from a specific source when you give negative feedback, but once it's decided you might be interested in a topic, getting it to stop recommending videos related to that topic feels impossible.

The only reliable way to get it to stop recommending inappropriate content is to delete the videos that triggered those recommendations from your viewing history.