A Change.org petition calling on UNICEF to strip pop star Pink of her role as a Goodwill Ambassador has now amassed 138,000 signatures, the latest flashpoint in a broader controversy over celebrity reactions to Macklemore’s pro-Palestinian remarks at a recent Ed Sheeran concert.

The dispute traces back to Sep. 4-5, when Macklemore, opening for Ed Sheeran’s Loop Tour at MetLife Stadium in New Jersey, told the crowd he wanted people in Gaza and the West Bank to know they had not been forgotten.

He performed his protest song “Hind’s Hall” while wearing a keffiyeh and displaying Gaza-related imagery on the stadium screens. The remarks drew cheers from parts of the crowd, alongside reports of some attendees walking out.

Pink then reposted an Instagram Story from the advocacy group StopAntisemitism criticizing the rapper’s performance and calling for refunds for concertgoers, without adding commentary of her own. The post accused Macklemore of exposing Jewish fans to anti-‘Israel’ propaganda, and it quickly drew accusations of prejudice and calls for a boycott of Pink.