The removal of an artwork can trigger an outpouring of grief, especially if the community was given little or no warning.
For different reasons, public art is not always intended to be permanent. But it’s also not meant to be removed without a thoughtful process that considers the feelings of people who find meaning in the art, while at the same time respecting the rights of artists and property owners.
Some of those rights are legal, as outlined in the Visual Artists Rights Act of 1990 (a part of U.S. copyright law). But there are ethical and practical considerations as well.