On this November 21st, we remember one of the greatest Mexican anarchist thinkers, Ricardo Flores Magón. In light of his cowardly imprisonment and death in the prison of Kansas in the Yankee territory, we fondly recall the legacy of anarchist revolutionary thought with a text that explains ‘what authority is for’ for all ages, in a Mexico immersed in partisanship and a ‘revolutionary’ government. As a personal note, I must say that this work has been a turning point in our perception of the repressive apparatus of the State, for which we should have the least consideration.