Please answer the following fact scenario concerning the legal question using case law to resolve the legal issue in the question.

The City of Whoville has placed a large Christmas tree in front of city hall. Some citizens of Whoville have complained that the tree is government sponsor of religion and have asked that it be taken down. The city has refused. A lawsuit was filed asserting that the city's action is an unnecessary entanglement of government sponsorship of religion. Please provide case law using the cases in chapter 2 of your text to determine if the city will have to take down the tree. Please provide the analysis of the court and what would be the likely outcome of the case.