Protestors lay down a banner calling on Malta Police Commissioner Lawrence Cutajar to resign on the steps of the Auberge de Castille, the office of Prime Minister Joseph Muscat, at the start of a four-day protest against the assassination of investigative journalist Daphne Caruana Galizia, who was murdered in a car bomb attack last week, in Valletta, Malta, October 26, 2017. REUTERS/Darrin Zammit Lupi