A Kentucky man who dressed himself and his son in Nazi costumes on Thursday said he regrets his decision.

A picture of Bryant Goldbach dressed as a Nazi soldier and his son as Adolf Hitler quickly circulated online last week from their time at the Owensboro’s Trail of Treats trick-or-treat event.  Goldbach said he chose the outfits for historical reasons and admitted he did not give it much thought.

“Anyone who knows us knows that we love history and often dress the part of historical figures,” he wrote on social media.

He added that his son was threatened for dressing up as Hitler.

“Tonight, grown adults threatened a child over his costume,” Goldbach wrote. “Threatened to rip his outfit off of him, screaming obscenities, scaring a small child.”

The rabbi at Temple Adath B’nair told WFLA8 in a statement that people should be mindful of the costumes they wear for Halloween.

“The fact that the father apologized is important; the fact he did not know the costumes would be offensive is a very sad reflection on our society,” said Rabbi Gary Mazo. “A good rule of thumb would be if your costume calls to mind an event where millions were killed, choose another costume.”

“I think it was in bad taste for me to let my child to wear that, probably for me to wear that. It didn’t occur to me. I thought it was a bad decision on my part,” Goldbach said, adding that people’s reactions took him by surprise.