Can a penny dropped from a building kill a person below?

The myth is that if you drop a penny from the top of the "Empire State Building" it can kill a pedestrian below, or go through the side-walk. A penny is not a spherical shape, therefore it is very unstable. It has a flat bottom, and the wind would slow it down. If it went sideways it still would be unstable and would slow down at times when it is sideways.
- John Baskin