BARABOO, Wis. – Authorities are trying to determine who posted anti-Semitic flyers ahead of planned meetings next week regarding a photograph of Wisconsin high school boys appearing to give a Nazi salute.

Baraboo Police Chief Mark Schauf said police are opening a criminal investigation following two acts of an anti-Semitic nature in the city.

The flyers were posted Monday on the exterior of Jack Young Middle School in Baraboo. They contained warnings about Dec. 18, an apparent reference to a day of high school assemblies featuring speakers calling for tolerance.

Police are also investigating a video that came out Monday on the website The video, self-titled “A satirical short about current events in Baraboo,” depicts members of the Baraboo community conducting violent, hate-related conduct. Officials said the video shows students and staff at Baraboo High School.

The city of Baraboo has two meetings coming up on Monday and Tuesday as part of the Baraboo Acts program. The program is in response to the recent publicity surrounding a photograph taken in May outside the Sauk County Courthouse in Baraboo. The parent who took the photo said he was simply asking the teens to wave goodbye to their parents before they headed to the prom.