Endorsement test

The endorsement test proposed by United States Supreme Court Justice Sandra Day O'Connor in the 1984 case of Lynch v. Donnelly asks whether a particular government action amounts to an endorsement of religion, thus violating the Establishment Clause of the First Amendment. According to the test, a government action is invalid if it creates a perception in the mind of a reasonable observer that the government is either endorsing or disapproving of religion.
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