Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: WASHINGTON (CNN) -- A small religious group has lost its fight before the Supreme Court to erect a granite monument in a Utah park next to an existing Ten Commandments display. Summum,a religious group, wanted to place its own monument next to this Ten Commandments monument. In the free-speech case involving competing faiths, politics and social norms, the justices voted unanimously on Wednesday that such privately donated displays on public property represent "government speech" subject to local officials' discretion. Summum, a Salt Lake City-based group, wanted to put up a 3-foot granite slab on the "Seven Aphorisms of Summum" in the city of Pleasant Grove, at the group's expense. Local officials argued they should be allowed to decide which permanent displays can be erected, since they would claim ultimate ownership and control.Justices ruled park displays are government speechReligious group Summum wanted to erect monument in city parkGroup wanted its 'Seven Aphorisms' to join Ten Commandments monumentCity said no; group alleged discrimination, violation of free speech 
 Question:_ displayed in public schools were banned in 1980.

Ten Commandments