“We think of 9/11 every day,” says Rabbi Joseph Potasnik of Congregation Mount Sinai in Brooklyn Heights. “All you do when it comes to the anniversary, you try to look back and say have I made a difference?”

During World War II, conductor Rafael Schaechter led Jewish musicians in performances of Verdi's Requiem before Nazi audiences at the Terezin concentration camp and said, "We can sing to them what we cannot say to them."

“In that courtroom in Jerusalem 50 years ago, people heard the voices of those victims in a way that they hadn’t heard them before,” says Deborah Lipstadt, professor of modern Jewish history and Holocaust studies at Emory University and the author of “The Eichmann Trial.”

A program of study, dialogue, and commemoration encourages Jewish and Christian high school students to understand each other's faith.

At times of cataclysm, catastrophe, and natural disaster, people ask many questions about God and his purposes.

Geneive Abdo, Iran analyst at the Century Foundation, talks about the religious dimensions of Iran's political crisis and the challenges it poses for the Islamic Republic’s cleric-run establishment.

Read more of the Religion & Ethics NewsWeekly interviews with American Jews about Israel.

Jewish memory is stored and transmitted in the paintings of Mayer Kirshenblatt, who with the help of his daughter Barbara Kirshenblatt-Gimblett has preserved his own memories and the collective memories of a Polish Jewish community before World War II.

Father Patrick Desbois has documented the murder of 1.5 million Jews who were shot dead and buried throughout Ukraine by the Nazis. Finding the mass graves has been "a sacred mission."

Memory and remembrance are central to Judaism, says artist Mark Podwal, whose documentary HOUSE OF LIFE, a loving appreciation of the old Jewish cemetery in Prague, includes the Pinkas Synagogue's memorial to Czech Holocaust victims.