neo-Stalinite

A modern-day Marxist-Leninist
Usually derogatory but generally refers to MLs that use Soviet apologia or nostalgia
This word is also used (wrongly) as a synonym for "left of Reagan"

Conservative: Bernie Sanders is a neo-Stalinite
Anarchist: No, Bernie is a moderate democratic socialist. Neo-Stalinites are a thing but if you misuse the term it's going to be meaningless.