Bad things happen in the world...every day. But just like Hugh Grant's character in Love Actually, whenever I get gloomy with the state of the world, I think about the arrivals gate at airports.
I'd embed the clip, but most of the youtube versions of it have embedding disabled, so here's the link: Arrivals Level at Heathrow Airport.
People are generally good. And there is a lot of beauty and happiness in the world -whether you're in Boston, Iraq, or Montreal.