Peru to sue Yale University

I've heard of the Greeks and Italians suing for artifacts currently held in the British Museum, but on our side of the Atlantic Peru is suing Yale over Incan artifacts in one of its collections.

It's an interesting debate, and ties in pretty strongly to what creates a cultural identity. These artifacts have the potential to be deeply significant to the Peruvians, but they cannot have much contact with them while they are in Connecticut. Which has more priority--the cultural identity of "humankind" or the cultural identity of a specific culture?