My Grandmother was an Inuit from Baffin Island. In her culture, if a hunter was out and broke his gun and there was a good one on a burial mound, it was OK to leave the broken one and take the good one. It was not OK to take a thing and not leave something of equal value.
I have always thought that the archeologists that are always digging should put the people back in their earth with replacements for anything taken. That would mess up future diggers to find a 1,000 year old person with stainless steel bowls.