On April 22nd, 1870, Vladimir Illyich Ulyanov "Lenin," hero of the Russian Revolution, and architect of the world's first Socialist state, was born. His contributions to the Marxist canon and to the revolutionary theory and practice of the proletariat throughout the world carries on to this day, in increasing magnitude. Every passing day, he is vindicated. His analysis of imperialism, the right of nations to self-determination, and revolutionary strategy have played a key role in the past century, and have remained ever-more relevant throughout.
He also loved cats!
Some significant works:
Imperialism, The Highest Stage of Capitalism
The Right of Nations to Self-Determination
Materialism and Empirio-Criticism
Interested in Marxism-Leninism, but don't know where to start? Check out my "Read Theory, Darn it!" introductory reading list!
You should not confuse leftism as synonymous with anarchy and decentralization.
Decentralization does not work for large scale infrastructure that is needed to make a modern society function. Power concentrated invariably produces hierarchy, but you can still have power divided enough to combat that with a centralized system. Ranked choice voting, sizing your house correctly, and allowing many competing viewpoints to exist through campaign funding laws can stop most of the ills.
It's a large mistake to assume that smaller groups of people will not still oppress others. Decentralization aids supremacy groups by allowing them to carve out areas where they have greater control, giving them a stronger foothold to take over society at large.