The New Age has been accused of cultural imperialism, misappropriating the sacred ceremonies, and exploitation of the intellectual and cultural property of indigenous peoples. Indigenous American spiritual leaders, such as Elders councils of the Lakota, Cheyenne, Navajo, Creek, Hopi, Chippewa, and Haudenosaunee have denounced New Age misappropriation of their sacred ceremonies and other intellectual property, stating that "value of these instructions and ceremonies [when led by unauthorized people are questionable, maybe meaningless, and hurtful to the individual carrying false messages". Traditional leaders of the Lakota, Dakota, and Nakota peoples have reached consensus to reject "the expropriation of ceremonial ways by non-Indians". They see the New Age movement as either not fully understanding, deliberately trivializing, or distorting their way of life, and have declared war on all such "plastic medicine people" who are appropriating their spiritual ways.