(JNS) “If anyone is flying out of JFK Airport today, please plan to travel to the airport ahead of time. There are planned protests today and will cause delays,” Philip Rivera, the NYPD chief of transportation, wrote around 1 p.m. on Jan. 1. “We don’t want anyone to miss their flights! Safe travels and Happy New Year.”

The post received angry responses demanding that the police do its job and remove the protesters. The disruption ended up delaying 60 flights at John F. Kennedy International Airport.

The “Flood JFK for Gaza” protest—using the same language, “flood,” as Hamas did on Oct. 7—was organized by Within Our Lifetime and included the chant, “NYPD, KKK, IDF you’re all the same” and a sign “Israel has waged a war on the children in Palestine.”

Video footage showed balloons floating above the airport, which is a potential federal crime. A source in law enforcement confirmed the balloons to the New York Post.

“The FBI is investigating who let the balloons go because they could cause a threat to aviation safety, the source said,” it reported. “It’s unclear if balloons were related to the protest. The Port Authority said it had no information on any balloons and Port Authority police made no arrests.”

“Victory! Port Authority has effectively shut down all entrances to JFK for people without a boarding pass. Airtrain service is closed, and cars cannot get into the terminal without proof of ticket,” Within Our Lifetime posted. “Airport is swarming with law enforcement and organizers were removed from Terminal 4.”

“We are calling on everyone without a car to meet us at the offices of El Al, the Zionist entity’s largest airline, for a protest at 100 Wall Street in Manhattan,” the group added, before announcing a “car caravan” to LaGuardia Airport, also in Queens.