One night in June 1970, 16 Soviet citizens attempted to hijack a small commercial plane from Leningrad to Sweden. The plane never left the ground that night, but the campaign to free Soviet Jewry took to the skies and soon crossed the Atlantic to America.

The Leningrad hijackers must have known that the plan was doomed, says Pamela Braun Cohen, author of Hidden Heroes and ex-president of the grassroots organization the Union of Councils for Soviet Jews (UCSJ), who was galvanized by the events of that day. At the inevitable trial that followed their arrest, Soviet judges meted out harsh punishments, including two death sentences for Mark Dymshits, a military pilot, and Edouard Kuznetsov, at 30, a seven-year veteran of the gulag. Nine others received long jail terms. But international pressure brought a reduction in the sentences. That was the first victory.

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