"MackNazi" on the loose: NYC man tears down hostage flyers

Mackenzie Watson, a dog walker living with his TV-actress sister on Manhattan’s Upper West Side, has been accused of terrorizing the neighborhood by ripping down Israeli hostage posters and allegedly confronting anyone who challenges him.

Since Hamas’ October 7, 2023, terror attack on Israel, Watson—nicknamed "MackNazi" by locals—has reportedly targeted residents displaying pro-Israel messages or removing pro-Palestine stickers, according to court records and accounts from his alleged victims.

“He really just hates Jews,” said a 48-year-old local, who claimed at least 100 residents have had negative encounters with Watson. She described him as more focused on tearing down posters than tending to the dogs he walks.

Watson, who lives with his 29-year-old sister Jamie Linn Watson—an actress known for roles in What We Do in the Shadows and The Treasure of Foggy Mountain—has drawn backlash for incidents like a June altercation where he allegedly harassed a 15-year-old girl and her mother. The teen had removed one of his "antisemitic" stickers, prompting Watson to follow them for five blocks, recording them with his phone and refusing to back down, the mother recounted.

Watson's actions have sparked fear and frustration in the community, with neighbors calling for intervention.

* The New York Post contributed to this article.