A reader of Andrew Sullivan's The Dish notes the hysterical tone of the U.S. media when compared to that of Canada. Welcome to the United States of Fear.
You might note the contrast between American and Canadian reporting on the Ottawa shooting. I listened to CBC on my drive in to work (I live in Los Angeles), and I was impressed by just how measured the reporting was, even with the crisis still ongoing. The attached picture probably goes a long way to explaining why Americans are terrified that tomorrow ISIS will be invading and imposing Sharia, and that we’re all going to die of Ebola, even though the chance of that actually happening is about 1/100th the chance of getting hit by lightning.