A bomb just detonated in American Jewish life.

America’s largest Reconstructionist synagogue officially cut ties this month with its national denominational body, citing its seminary’s persistent minting of anti-Israel rabbis.

The stunning public rebuke over anti-Zionism by Kehillat Israel — a California congregation in mainstream Judaism’s most left-wing branch — is a watershed.

The grownups have shown up. Maybe it will help us fix the kids.

Kehillat Israel’s Rabbi Amy Bernstein told The Post her Pacific Palisades congregation, with 930 families, was fed up with Reconstructionist rabbis fomenting intolerance against the very people they’re meant to nurture.

“What they want is to use their title ‘rabbi’ to help Jews and non-Jews hate the idea of a Jewish democratic state. I don’t unde

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