Functionally, religion is what is held as sacred, that is, as untouchable. In the United States, taxes and military manpower are untouchable and, therefore, beyond objection by particular religions. The courts, too, are untouchable in determining what is and what is not religion. Despite these severe limitations on religious freedom, sometimes religion has broken the national consensus - most notably in the abolitionist movement of 1829-1865 and in the civil rights movement of 1959-1964. Such acts of religious freedom have been the dynamism of profound social change.