Since the 1960s, however, there have been major changes in society. Included is a broader appreciation for the pluralistic nature of United States society and its many ethnic groups, as well as for the special status of Native American nations. More recent legislation to protect Native American religious practices, for instance, points to major changes in government policy. Similarly the Native American Graves Protection and Repatriation Act of 1990 was another recognition of the special nature of Native American culture and federal responsibility to protect it.