In Canada, indigenous people boycotted the Canadian Indigenous Music awards over the nomination of a singer that uses traditional Inuit throat-singing techniques despite not belonging to the specific tribe that uses those techniques. 
This case of cultural appropriation goes against the notion of cultural colonialism as a better term. The singer was Cree and was, therefore, a minority herself, belonging to a minority group with a history of marginalization in North America. However, those that are accusing her of cultural appropriation are also minorities.
This is not a form of cultural colonialism, as the Cree tribe are not oppressors nor a dominant race. However, evidently minority on minority cultural appropriation still has the power to cause offense and should be included under the banner of cultural appropriation.