Your other two sons are a problem.
The interesting part was learning that Lenin was a self-loather, which pretty much sums up what the majority of those who subscribe to the Marxist theology (in many ways it is a religion) suffer from & explains why they are consumed by hate.
Could this explain your other two sons? If so, you may now know a way to bring them both or perhaps even just one, back into the realm of sanity. Worth a try no? Plant the seed with this video, and then try to nurture. Even if it fails, you still tried. Continued trying just may bring success eventually. 🙂👍
The youngest, the socialist, I have the most hope for. He lives here in Israel, and has close ties to both his brothers. If I can drop the video and several others in his e-mail, it could be the pebble rolling down the snowy slope.