OTTAWA—What police were calling an “ambush-style” shooting in the Toronto area that left one teenager dead and five other people injured saw federal party leaders swiftly move to offer condolences Sunday but little in the way of new ideas to combat gun violence in Canada’s cities.
Liberal Leader Justin Trudeau had already been on the way to Mississauga, Ont., when he briefly addressed the incident, telling reporters he would speak with the city’s mayor, Bonnie Crombie, to offer support from the federal government.





