And they should continue changing by repatriating artifacts if the original owners want them back. It's entirely possible that some cultures might prefer having their artifacts be kept by others, but that clearly isn't always the case. For instance, bones and sacred items taken from indigenous peoples.

And as far as instability is concerned, a lot of that was caused by the same imperialist governments that looted the artifacts to begin with, so blaming those governments for that doesn't seem fair.

Recently Buddha's jewels where on the news due to it's british owners putting them up for auction and all the buddhists of the world not being very happy about it

> Not to forget that the very promotion of those foreign artifacts played a big role in making Westerners recognize the value of those other cultures and how much we have destroyed!

This is kind of where I stand on zoos. It sucks to see animals taken from their homes and held in unnatural captivity but the science, conservation, and educational aspects have a lot of value which is hard to ignore. A lot of people would never care if they didn't see with their own eyes what they stand to lose.