Sometimes the camera sees scary things happen.
For the record, I start signaling as soon as I hit the crosswalk, (I had trouble getting the text to pop up at the exact moment I wanted to in the editor... I'm still learning the tricks of iMovie.) I gave plenty of warning to other vehicles that I was changing lanes.
This spot along Penn ave seems to be jinxed:
The camera also sees pedestrians getting the short end of the stick frequently.
Other times, you run across some really cool sights and the camera lets you go back and see them for a second time.