Police have launched a probe into Saturday's discovery of the offensive images, as local officials denounce any "acts of antisemitism or bias attacks."
West Orange residents had questioned chopping down 1,000 trees for the private high school to install the artificial athletic fields, ahead of the town zoning board's approval.
The Bat Mitvah did happen in the backyard but it was not the same experience for his family which was looking forward to celebrating the milestone in his daughter's life.