To discuss who it is a crime against is to acknowledge it is a crime. Crimes with victims and 'victimless' crimes are, by definition, crimes.
The definition of 'a crime' requiring a victim is only used by criminals who can't accept that what they are doing is a crime. If our actions are a breach of criminal law then we have committed a crime and are therefore criminals.
If I were you And I wish that I were you All the things I'd do To make myself turn blue