A similar shift (and dramatic increase in publicity) has happened on the subject of repatriation from museums collections over the last couple of years. The latest piece I've read is by museum curator Chip Colwell, a letter to the editor in the NYT that talks about what museums have to gain, rather than lose, from repatriation.
Ticketed for future reading: Response to the 2018 Sarr-Savoy Report: Statement on Intellectual Property Rights and Open Access relevant to the digitization and restitution of African Cultural Heritage and associated materials
I learned a massive amount from this NYT article, which describes how 12 linked exhibitions in Spain are exploring the art of its former colony Peru (which gained independence in 1821):
“This is the first time we’re showing a painting from colonial America,” Miguel Falomir, the Prado’s director, said in a telephone interview. The Prado owns “between 15 and 20” paintings made in Spain’s former colonies, he said, but they are kept by the ethnographic Museum of the Americas. They have never been shown alongside European old masters.
For centuries, “we’ve considered this art as second-class,” Mr. Falomir said. “That, thank God, has changed.”Smart work at SFMOMA: Tracing the Roots of Photo Sharing, From Mail Art to Instagram
One of curator Okwui Enwezor's final interviews: “There are code words to push back against change”