On May 1814 (julian calendar May Russian revolutionary and philosopher Mikhail Alexandrovich Bakunin was born. Although many scholars argue if he is the founder of anarchist theory in general, he was the leading theorist of collectivist anarchism.
Mikhail Alexandrovich Bakunin May [O. 18 May] 1814 – 1 July was a Russian revolutionary, philosopher, and theorist of collectivist anarchism. Many scholars argue he is the founder of anarchist theory in general
Prof. Max Tegmark - Life 3.0: Being Human in the Age of Artificial Intelligence https://www.youtube.com/watch?v=ImrBfVK10AY
"Mass Meeting at the Wonderland -- Mikhail Bakunin, anniversary of his death", Mikhail Alexandrovich Bakunin was a Russian revolutionary ideologue, and one of the most influential figures in the development of Anarchism.