Qualified immunity is a doctrine in U.S. federal law that arises in cases brought against state officials under 42 U.S.C Section 1983 and against federal officials under Bivens v. Six Unknown Named Agents, 403 U.S. 388 (1971). Qualified immunity, when applicable, shields government officials from liability for the violation of an individual's federal constitutional rights. This grant of immunity is available to state or federal employees performing discretionary functions where their actions, even if later found to be unlawful, did not violate "clearly established law". The defense of qualified immunity was created by the U.S. Supreme Court, replacing a court's inquiry into a defendant's subjective state of mind with an inquiry into the objective reasonableness of the contested action. A government agent's liability in a federal civil rights lawsuit now no longer turns upon whether the defendant acted with "malice", but on whether a hypothetical reasonable person in the defendant's position would have known that his or her actions violated clearly established law.