To lift a phrase from the protester's protest, "representing European representations of Indigenous peoples" is exactly the WORK of an artist. I suspect that mission was the POINT of the art on display. On the other hand, being reticent or reverent before such "representation" is the business of a priest or a propagandist. A museum is a place for showing art and artists, not politicians. If there are no Aboriginal spokespeople who understand this, then we have failed to educate a portion of the population.