Things seemed crazy in the US and Canada last week, with a shooting on normally tranquil Parliament Hill in Ottawa and a grisly hatchet attack on two New York City policemen. Add in an American doctor who returned to the big city from Ebola-stricken West Africa and proceeded to run around all over town – from the Bronx to the west Village to a bowling alley in Brooklyn – just as he was coming down with the dreaded sickness. New Yorkers are a pretty tough bunch, so panic was mild, but in this...













