In COUNTY OF ALLEGHENY ET AL. v. AMERICAN CIVIL LIBERTIES UNION, the US Supreme Court held that placing a Chanukah menorah outside the City-County Building in Pittsburgh did not violate the First Amendment Establishment Clause. T/F

In the County of Allegheny v. American Civil Liberties Union case (1989) dealt with two religion displays located on public property in downtown Pittsburgh, and for each of them, the Court had different rulings.

One of those displays was a Christmas crèche that had the phrase: "Glory to God for the birth of Jesus Christ," and was placed inside the Allegheny County Courthouse. In Court, the majority of justices saw this message and the location of the display, a clear proof that the state government was endorsing the Christian orthodoxy religion and therefore, it was considered a violation of the Establishment Clause of the First Amendment which is a clause that prohibits the government from making any law “respecting an establishment of religion,” and from favoring, supporting, or sponsoring one religion over another.

The other display was an 18-foot menorah (from the Hanukkah holiday) placed outside the City-County Building, and next to the city's Christmas tree. For this item, the Court held that it was constitutional due to its "particular physical setting."

This case, then, affirmed that not all religious celebrations on government property are considered a violation of the Establishment Clause.