Shortly after the 1968 Democratic Convention, Tom Hayden, Rennie Davis, Abbie Hoffman, Jerry Rubin, Dave Dellinger and Robert Greenblatt received subpoenas to appear before the House Un-American Activities Committee (HUAC). Michael Kennedy was among the group's six defense attorneys. The HUAC hearings were viewed by the NECLC as an "attempt by the Johnson administration to use every mechanism at its disposal to legitimize the action of Mayor [Richard) Daley and the Chicago police," and the violence they displayed against protesters during the 1968 DNC. Daley had ordered the entire Chicago police force of 12,000 men to work 12-hour shifts and called in over 5,000 National Guardsmen in addition to some 1,000 Secret Service and FBI agents who were also on duty.