The latest viral stunt involving pigeons wearing different styles of hats has animal activists concerned about its impact on wildlife.

On Tuesday, ahead of the Democratic presidential debate, a flock of pigeons wearing red “Make America Great Again” caps were released onto the streets of Las Vegas by an underground radical group called P.U.T.I.N, an acronym for Pigeons United To Interfere Now, according to KSNV.

The political prank was meant to be an “aerial protest piece” against Democratic presidential candidates, who were in the city ahead of the debate, as well as a sign of loyalty to President Donald Trump, who was also in the city that night, the guerrilla organization said in a statement to the local news outlet.