Notice how Kurt’s doll head picture is quite similar to Paul from the Butcher album. Paul of course having the “Paul is Dead” mythology(?) surrounding his character, and Kurt having a murder conspiracy surrounding his. The roses in Kurt’s photo could symbolize secrecy, for roses are often a symbol of silence and/or secrecy, and he is prominently featured under them (sub-rosa):
The use of the rose as a symbol for silence or secrecy goes back to the ancient Egyptians or Greeks, where initiates into the “mysteries,” or pre-Christian religions, wore roses during ceremonies to indicate that they would keep inviolate any secrets that were passed on to them. In many countries it was customary to hang a rose over secret meetings or gatherings—hence the term sub-rosa (literally “under the rose”) to mean confidential.