The star witness in Poland's latest courtroom drama arrived wearing a T shirt emblazoned with the logo of Solidarity, the outlawed labor union he helped found. Lech Walesa had been summoned by the prosecution to testify in the trial of three Solidarity supporters, Bogdan Lis, Wladyslaw Frasyniuk and Adam Michnik, charged with trying to organize strikes to protest food-price increases. Walesa's testimony was as defiant as his dress. "Three innocent people are in the dock," he told the court.
The Polish government granted amnesty to more than 600 political prisoners last year. Since then, however, according to dissidents, it has arrested...