Pressed for time, the tarp atop a heap of dirt is not secured. It hangs loose. As the driver picks up her speed, a batch of dirt escapes the truck. She barely notices.
A man in his passenger car is driving to work. One of his wheels picks up a pebble. Less than a second later, the pebble flies 120 kmh before hitting the windshield of the car behind him. A small stone cracks the glass. The impacted driver swears under her breath. The man has no idea. He drives on.
Some distance away, a girl is walking down a familiar road. She must be off to school. A gas cylinder appears out of nowhere and knocks her flat onto the road. The bones on her legs crunch on impact. She cries out.