It doesn't appear to be effective to appeal to national people.

I think that the drone'll be useful for the future. It has much latent potential,
but this incidents would restrict the operations.  I don't understand why the
person do such a criminal thing.

http://www.japantimes.co.jp/news/2015/04/23/national/cesium-carrying-drone-landed-prime-ministers-helipad-time-march-22-abe-flight/#.VTlTDdLtl8N