745 ILCS 10/1-204

"Injury" means death, injury to a person, or damage to or loss of property. It includes any other injury that a person may suffer to his person, reputation, character or estate which does not result from circumstances in which a privilege is otherwise conferred by law and which is of such a nature that it would be actionable if inflicted by a private person. "Injury" includes any injury alleged in a civil action, whether based upon the Constitution of the United States or the Constitution of the State of Illinois, and the statutes or common law of Illinois or of the United States.