Shouldn't a license or some form of registration be required? What if it hits a building or car by mistake? There needs to be some way to trace it to the owner to pay for the damages.
Are you going to be as happy when someone makes that same argument about baseball?
"What if a baseball hits a car or a building?
I mean, those things aren't even under the operators control after they've left the hand (or bat). And my god, think about it! They could fill one with high explosives!
Quick, we need to regulate this. Every baseball needs a registration number so we can identify it's owner, and every baseball bat and throwing arm needs to be licensed!"
I don't see how the two are similar at all. When a baseball comes crashing through your window or hits you in the head the person who's responsible is most likely a few dozen feet away. Chances are it's a neighborhood kid who's easily identifiable.
When a model airplane smashes into a car, person, building, etc. the owner could be thousands of feet (or miles as we see in this video) away. It's extremely difficult to trace the plane back to the owner.
I'm thinking the owner is probably the guy who runs up saying, "I'm sorry, I'm sorry, I'm sorry." Will that always happen? No, of course not. Some people are jerks. Are most people jerks, though? No. The last thing we need is more laws, especially ones that enforce responsibilities most people will take on for themselves.
These planes can fly for miles as did this one in the video. The owner isn't going to be running up to anyone after a crash because he'll have to get in a car first and drive over.
If your going to be flying something though the air that has a large range and can seriously hurt someone or damage property, it's not to much to ask that it be registered somewhere. Simple registration number so we know who the owner is.
Edit: The remote can also lose contact and the owner wouldn't know where the plane crashed to cover property damages.
By this logic, people should have registration numbers tattooed on their foreheads, so that if one commits a crime (or just looks at you wrong), we can immediately find it.