I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:

• yewtu.be
• inv.zzls.xyz
• yt.artemislena.eu
• piped.video

I think the clip of lenin is this, apparently from lenin in october

the film is online here, has english captions, but i'm not sure if it's a post 1957 copy which was heavily doctored to remove stalin, those damn stalinists always doctoring media!! (nah ya boi is totally present, I checked)