World ‘One of the most senseless acts of violence’: At least 16 killed in worst Canadian mass shooting since 1989 April 19, 2020April 20, 2020The Associated PressComments Off on ‘One of the most senseless acts of violence’: At least 16 killed in worst Canadian mass shooting since 1989 Canadian police arrested a suspect in an active-shooter investigation after saying he may have been driving a vehicle resembling a police car.