A performance commemorating the 1941 Jedwabne pogrom, in which Poles burned alive several hundred Jews locked in a barn, sparked criticism among Polish and Jewish groups on Monday.Polish performer Rafal Betlejewski burned down a barn in the village of Zawady in central Poland on Sunday night in what he said was his crusade against Polish anti-Semitism.Poland was home to Europe’s biggest Jewish population until World War Two, when most of its Jewish citizens perished under the Nazi occupation. The death of at least 340 Jews in Jedwabne continues to be a trauma for Jews and many Poles.”Poland is a completely different country than it was 80 years ago when there was a big and significant Jewish minority, which participated in Poland’s cultural, social and scientific development,” Betlejewski said before the performance.