It is not a war crime to write a song, to sing a song, or to laugh at a song--and not a war crime to quote a satirical puppet movie in the refrain of your song(which is why the "Durka, Durka..." line gets a laugh--they know it's a line from a movie)--
Listen and learn is my motto, and I learned a lot from the song--Glad that I had a chance to hear it--and am not surprised or offended by it--it is a song, intended to entertain a bunch of people in a very desperate situation--and the song is a satire--satirists are entitled to a lot of latitude under the law--I read a legal decision on it--