This awareness of bitcoin is the most craziest than I have ever seen because it is like risky your life through your action on promoting bitcoin. They are indirectly tell the people that a decentralized system is better than a centralized system, if not why was the projection on the same building where a bank is. I like this innovation and I give kudos to those bitcoin lovers that did this. I still believe that this is sending a message to the citizens of Frankfurt and the world that some day bitcoin will be mostly used than fiat currency from my understanding. Bitcoin have removed a burden from its user and fiat is putting a heavy burden on its users.