This is Andy Grote, senator of the interiour of the German city state of Hamburg. He will send the police to harass you if you call him a "Pimmel" (funny word for penis). As a sign of protest, many graffitis are appearing, doing exactly that.
Reminds me of of Herbert Reul (State Minister for Internal Affairs) some kids throw a Bengal flare in his garnden. The Police did search with Helicopter after them. Also wrote criminal charge "Explosives Act" because of the Bengal flare.
This is 9000 times more ridiculous. At least with the flare something real is happening and his grass is burnt. You could even argue it is somewhat dangerous to throw around fire like that.