Why is it banned? What is the accepted narrative and what is the alternative narrative?

1080p version on YT [0]

Also a pretty harrowing account of Russia's tactics in Chechnya (NSFW) [1]

[0] https://www.youtube.com/watch?v=pKcmNGvaDUs

[1] https://www.youtube.com/watch?v=3bHQujjarpc