It's basically an ideology in Russia that combines communism with national socialism, and has been propagated in the west recently using dumb memes. It's often combined with the anti-white ideology "Eurasianism" that believes western and eastern Europe should both join Asia and partake in its culture, both being partially founded Aleksandr Dugin who is a homosexual* mega-spook. He's a "special kid" to Putin and the other oligarchs.
To give a more local perspective, Kotleba is loosely connected to them with his close ties to Russia today. Richard Spencer's (the homosexual and probable jew) "wife" translated "The Foundation of Geopolitics", and several other pro-Putin golems have expressed their support for Nazbol.
*he was gay for Eduard Limonov, the now deceased founder of the Nazbol party. and a known hyper-degenerate who once even had sex with a black man going by his book Ya Edichka,