 In 1970, according to Christopher Andrew and Vasili Mitrokhin, agents of the Soviet KGB forged and sent threatening letters to Arab missions claiming to be from the JDL to discredit it.They also were ordered to bomb a target in the "Negro section of New York" and blame it on the JDL.On January 25, JDL members staged anti-Soviet demonstrations at a concert of the Moscow Philharmonic Orchestra in Brooklyn College's auditorium.