When it was born a century ago, Jewish intellectual influence in America was on the rise. Now it’s starting to decline.

By Peter Beinart | Dec. 10, 2014 | 3:00 PM

It’s an important moment not only in the history of American journalism, but in the history of American Jews.

It’s an important moment for American Jews because for the last 40 years, The New Republic has been a culturally Jewish magazine. Jews had always worked at TNR; Lippmann himself was an assimilated German Jew. But in 1974, when Martin Peretz bought The New Republic, it came to reflect his very public Jewish identity. TNR became a remarkable hybrid, only possible because of the extraordinary acceptance and privilege afforded to Jews in late 20th century America: an influential liberal political magazine that was explicitly informed by Jewish sensibilities and concerns.

The most obvious manifestation was the magazine’s coverage of Israel. Peretz was a fervent Zionist and made defending the Jewish state one of the magazine’s chief passions. But even when Peretz stepped down as editor in chief in 2010, TNR’s Jewish identity endured.

Under literary editor Leon Wieseltier, the magazine remained an indispensable source of commentary on Jewish history and culture. And inside the magazine, yiddishkeit was rarely far away. I remember once hearing Wieseltier explain that he had asked an author to submit his book review by Rosh Hodesh. “That’s how Malcolm Cowley used to do it,” he added wryly. The implication was clear. Cowley had been TNR’s literary editor in the 1930s, when American Jews were still outsiders. Now his successor was a graduate of Yeshivah of Flatbush. American Jews had arrived.

As a force in American journalism, we certainly have. Jews edit The New York Review of Books, The New Yorker, The Weekly Standard, The Atlantic, Foreign Affairs, Foreign Policy, Vox, Buzzfeed, Politico, and the opinion pages of The New York Times and Washington Post.

But it’s unlikely to last. Although the ouster of Wieseltier and editor Frank Foer had nothing to do with their being Jewish, the likely end of TNR’s Jewish sensibility may portend the declining influence of Jewish culture in American intellectual life. One driver of that decline will be assimilation. With the intermarriage rate among non-Orthodox Jews now above 70 percent, Jewish identity in the United States is becoming less and less distinct. For many decades to come, there will still be plenty of people with some Jewish ancestry writing and editing at America’s most prominent publications. But increasingly, being of Jewish descent will no more inform their work than being of Italian or Irish descent informs the work of their assimilated Christian colleagues. One likely result will be declining coverage of Israel. Many of the most prominent American Jewish journalists in their late 40s, 50s or 60s – Wieseltier, Thomas Friedman, David Remnick, Roger Cohen, Jeffrey Goldberg, William Kristol, Jennifer Rubin, Charles Krauthammer – write about Israel frequently. By contrast, the most successful Jewish journalists in their 20s and 30s – Ezra Klein, Matthew Yglesias, Ben Smith, Dana Goldstein, Spencer Ackerman – write it about it much less.