The father of a young woman whose murder galvanized Italian outrage against violence targeting women implored men during her funeral Tuesday in the northern city of Padua to be “agents of change” to a culture that often “undervalues the lives of women.” Outside, thousands of mourners rang bells and shook keys, part of a campaign to “make noise” against gender violence that has grown in intensity in the weeks since 22-year-old Giulia Cecchetin was found dead, her throat slit, in a ditch in a remote area of the Alpine foothills on Nov. 18. Filippo Turetta, 21, was later arrested in Germany, and is being held in an Italian jail during an investigation to bring charges.