Justices Rule for Protesters at Military Funerals - NYTimes.com

Chief Justice Roberts wrote in the ruling that three factors required a ruling in favor of the church group

1. its speech was on matters of public concern
2. the relationship between the church and the Snyders was not a private grudge.
3. the members of the church “had the right to be where they were.” They were picketing on a public street 1,000 feet from the site of the funeral, they complied with the law and with instructions from the police, and they protested quietly and without violence

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