Humphrey, meanwhile, promised to continue and expand the Great Society welfare programs started by President Johnson, and to continue the Johnson Administration's "War on Poverty." He also promised to continue the efforts of Presidents Kennedy and Johnson, and the Supreme Court, in promoting the expansion of civil rights and civil liberties for minority groups. However, Humphrey also felt constrained for most of his campaign in voicing any opposition to the Vietnam War policies of President Johnson, due to his fear that Johnson would reject any peace proposals he made and undermine his campaign. As a result, early in his campaign Humphrey often found himself the target of anti-war protestors, some of whom heckled and disrupted his campaign rallies.