The marital rape exemption or defence became more widely viewed as inconsistent with the developing concepts of human rights and equality. Feminists worked systematically since the 1960s to overturn the marital rape exemption and criminalize marital rape. Increasing criminalization of spousal rape is part of a worldwide reclassification of sexual crimes "from offenses against morality, the family, good customs, honor, or chastity ... to offenses against liberty, self-determination, or physical integrity." In December 1993, the United Nations High Commissioner for Human Rights published the "Declaration on the Elimination of Violence Against Women". This establishes marital rape as a human rights violation.