As I said, there are not specific laws for UAVs in Portugal, and although I follow almost entirely the CAA rules, I must admit that fly over people is not one of them.
I really think it is dangerous and should only happen in specific situations .
But I also think that the European regulations that will emerge in 2016, should take into account the need by the media to have pictures like this.
I think there should be a class that would be allow this kind of flight, with some specific UAVs, and pilots.
We used a Asctec Falcon 8. And i am not in any means saying that the manufacturer indicates that this is a UAV that allows this type of flight ... but I have more than 1000h of flight ... and that gives us an additional confidence when fly. In addition, the total weight of the UAV with a Sony Nex5 and batterie is 1.7kg.
Regarding the accident that you mentioned, I will not comment without more information.
I only can say that it seems to me that it was a FlameWeel UAV, and for me that is a "Hobby" class, which is usually build at home and without proper testing and should continue to be a "hobby" UAV, and it can be a great "hobby", but its not to have professional use .
And you cannot compare to a professional UAV, which was produced by professionals to be specifically a image platform, which is tested and has constant upgrades, which is the preference due their reliability by inspections and land surveying specialists and has a record of thousands of hours without any problems ...
With this I am not saying that there will be no problems. Last month fell a plane that was surely tested to the limits... and in the UK, a helicopter crashed in the beginning of this year... and those devices were surly very tested too.
What happens is that there is always a risk, but it is calculated on the benefits and potential losses, and that's why airplanes fly. We do know that they can fall... sometimes they land in aeroports within the city limits and fly over buildings, but the risk is minimal.
I think the same should happen with the UAV when flying over people, should be evaluate the risk, and then give permission or not.
Fly with a octo with 12kg, is different from flying with a octo with 1.7kg ... fly with a hobby line UAV is different from flying with a professional one, and fly with a pilot who only have a few hours of flight is different from one with hundreds of hours.
At the end... fly over people is dangerous, but it can be done safely.
But ... this is just my opinion ...