Youtube appears to be experiencing problems with hate groups mass-reporting "SJW" videos, including: LGBTQ+. anti-racisim, and disabilty supoport groups. I know that Youtube is hard to archive, but is there any coordinated effort to 
capture at-risk channels?
Tangent: meta-data support on Youtube-dl appears to be broken.
possible starting point: https://www.maxlaumeister.com/blog/google-is-deleting-your-favorite-youtube-videos/