1.
A ~ is a collection of photographs of criminals that is kept by the police and used when they want to identify someone. (JOURNALISM)
...a Rogues’ Gallery of juvenile crime gangs.
N-SING: oft N of n
2.
You can refer to a group of people or things that you consider undesirable as a ~. (JOURNALISM)
He and others in the rogues gallery of international terrorists may be running out of time.
N-SING: oft N of n disapproval