sentences:  The rise of a "Let My People Go" resistance movement was accompanied by the development of an underground Jewish renaissance movement, in the form of religious, cultural, and Hebrew language self-education groups.To publicize this, Birnbaum added the words "Let My People Know" (their heritage) to SSSJ's original "Let My People Go" slogan and marshaled the support of various Christian groups in annual spring campaigns in the early 1980s for the protection of these self-education groups under intense attack by the KGB.In September 1985, he organized and led a mixed delegation of Orthodox, Conservative, and Reform rabbis under the auspices of the inter-denominational Synagogue Council of America to meet with the Deputy Secretary of State.