Что мы не знаем об Эйзенштейне?

Eisenstein is not just a name. It is a symbol, a brand, a quality mark. His film "Battleship Potemkin" was recognized in 1958 by an international jury of experts as the best film in the history of world cinema, and the director himself was declared a genius during his lifetime. Among the feelings of the master, which clearly did not fit into the Stalinist ideological norms, Eisenstein's sexual orientation could also appear. Where did the rumors about his homosexuality come from and is there any real ground beneath them? What is the real nature of his sexuality, was it somehow conditioned by his biography and how did it affect his work? Are judgments about the particular cruelty of his films sound and, if so, what caused it - the reality surrounding the master or his personal predisposition?