I was just watching a documentary about the B-17 Flying Fortress (an aircraft i've always loved) and it struck me as they demoed the twin 50-cal ball turret that these guys would have been firing wildly at any enemy fighter approaching them. That's a lot of bombers spraying a lot of lead over populated areas. Apart from the bombs, was this a hazard people worried about? Were there any documented events of people or property being hit by bullets fired from up there?
A while back I answered a similar question, about civilians hit by falling flak.
While it's not entirely the same, I think it's appropriate.
Add-on question; Supposedly even the shell casings from aircraft guns were deadly to people on the ground. Did anyone ever actually get killed this way? Is that why modern fighters don't eject spent shells?