[Conflict of interest notice: I’ve volunteered for both private and public charities, but more often private. I received a small amount of money for work done for a private charity ten years ago. Some of the private charities have been partially funded by billionaires.]

From Vox: The Case Against Billionaire Philanthropy. It joins The Guardian, Truthout, Dissent Magazine, CityLab, and a host of other people and organizations arguing that rich people giving to charity is now a big problem.