People have been killed by automobiles on more than several occasions.
There are about 100 childhood drownings in buckets, bathtubs, toilets and water features around homes every year.
The most recent, of the quite rare, incidents in the US of remote controlled model plane deaths were helicopters that have quite long, very fast rotating, dangerous blades. The drone in this article isn't going to chop off your head or your arms or probably anything else.