There was a situation recently in LA where drones prevented fire fighting aircraft from reaching an area for about 20 minutes. Numerous vehicles and trucks were lost, but it not clear if this was a contributing factor. At some point, drones will be taken down for real and obvious threats (has happened at nuclear power plants), and the law will have to change.

If someone follows me with a drone for a few feet, that is life in the 21st. If someone buzzes me with one in a threatening manner, I will take it out.