sentences:  The years 1964–1966 served as the early "Shofar period" of the Soviet Jewry movement – a call to conscience and a call to action.In 1965 Birnbaum led SSSJ in a challenge to the wall of separation cutting off Soviet Jewry.He organized two Jericho Marches around Soviet diplomatic buildings in New York (April) and Washington, DC (May) to the accompaniment of the sounds of the shofar.