 On May 20, thirty-five JDL members took over the Park East Synagogue, opposite the Soviet Mission, and barricaded the entrances in order to hold a "liberation seder" for Soviet Jewry.On June 23, about forty JDL members seized two floors of an office building in New York housing Amtorg, the official Soviet Union trade office, and evicted the personnel in what the JDL deemed retaliation for the arrests of Jews and raids on Jewish homes in the Soviet Union.On June 28, 150 JDL members demonstrated over attacks against the Jews of Williamsburg in reprisal for the accidental killing of a black girl by a Jewish driver.