Collective responsibility.
In an essay on Parashat Noach (Lessons in Leadership: A Weekly Reading of the Jewish Bible, Maggid and the Orthodox Union, Jerusalem, 2015, pp. 7-12), R. Jonathan Sacks posits that the well-known principle of (Shavuot 39a) “Kol Yisrael Zeh LaZeh” (all Jews are guarantors and therefore responsible for one another), an articulation of Jewish collective responsibility, should be expanded, based upon the case of Noach, to: “all human beings are responsible for one another.” By remaining silent in the face of human corruption and moral failure, Noach was remiss as a leader, despite being the only individual in the entire TaNaCh who is objectively referred to as a “Tzaddik” (see “Noach: A Tzaddik Navigating Full of Evil-Doers”).