Rabbi Joseph B Soloveitchik: The Sin of Our Silence during the Holocaust

This one-minute segment is from an informal talk that the rabbi delivered in the late 1970's.
"Somebody suggested to me - and he's right - that in the "Al Cheit" ("For Our Sins" confessional prayer) on Yom Kippur, a new "Al Cheit" should be included:
"For the sin that we sinned against our brethren in Europe, when they cried out to us and we did not listen."
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Rabbi Joseph Ber Soloveitchik (1903-1993), scion of a legendary rabbinic family, was renowned as a Talmudist and philosopher. He is celebrated for his insightful synthesis of Torah ethos into the modern world.
As a rosh yeshiva of Rabbi Isaac Elchanan Theological Seminary at Yeshiva University in New York City, Rav Soloveitchik ordained close to 2,000 rabbis over the course of half a century. He served as advisor, guide, mentor, and role-model for tens of thousands of Jews, both as a Talmudic scholar and as a religious leader. He is regarded as a seminal figure by Modern Orthodox Judaism.