I was talking about the concept of using Parrot drones or helicopters to do news footage and get views above crowds with a guy who has an autonomous helicopter. He quickly burst the concept by pointing out to me that his autonomous helicopter has a 6 foot diameter rotor made of carbon fiber. Or in his words "If I lost control of it over a crowd, what damage do you think two samurai swords coming in at 30 mph could do to a bunch of people? People that fly drones over crowds are assholes". (his words, but I thought they were worth noting)

A Parrot drone is much smaller, but I still wouldn't want to be hit with one, spinning propellers and all. I had one and found it hard to control with any wind in the area.