In most American cities, non-profit groups expend at least a nominal amount of effort asking local government entities for money, which may or may not be forthcoming. But in the fiscally strapped city of Pittsburgh, nonprofits have actually been contributing money to the city government for the past couple of years. Now, the city has tired of the voluntary contribution system, and wants to require larger “contributions” (also known as “taxes”) from non-profits like hospitals that are actually turning large profits.