The mayor of Rome Roberto Gualtieri rushed to the Trevi Fountain after the UltimaGenerazione blitz. He added: "Enough of these absurd attacks on our artistic heritage.

Expensive and complex restoration. I call on activists to compete on a terrain of confrontation without putting monuments at risk" The risk is when it goes on the marble that is porous, Gual tieri said. The first estimate is that there should be no permanent damage because the black paint is deposited all around the waterproofing material.