Whom belongs on Canada’s sex offender registry? A contentious ruling in Alberta would allow judges The national sex offender registry contained 43,217 names—or about one entry for every 813 people in Canada at last count. Provide and take a few mug shots, record is equivalent to the populations of Courtenay, B.C., Chatham, Ont., or Charlottetown, P.E.I. It won’t be considerably longer ahead of the database, ever expanding, includes enough convicts to fill every seat at a Toronto Blue Jays game.…