Philadelphia City Councilmember Mark Squilla and dozens of Italian American groups sued Mayor Jim Kenney’s administration in federal court Tuesday for changing the name of the city’s Columbus Day holiday to Indigenous Peoples’ Day.

“While both groups’ ethnicity deserve recognition, Mayor Kenney may not take action that discriminates against Italian Americans to exalt another ethnic group in its place,” said the suit, which was filed in U.S. District Court in Philadelphia.