American Legion v. American Humanist Association

American Legion v. American Humanist Association, 588 U.S. 29 (2019), was a United States Supreme Court case dealing with the separation of church and state related to maintaining the Peace Cross, a World War I memorial shaped after a Latin cross, on government-owned land, though initially built in 1925 with private funds on private lands.

Source: Wikipedia — American Legion v. American Humanist Association (CC BY-SA 4.0)