acccording to the "handbook of massachusetts evidence", "because of the risk of prejudice to the defendant inherent in the admission of photographs of the 'mug shot' variety, judges and prosecutors are required to 'use reasonable means to avoid calling the jury's attention to the source of such photographs used to identify the defendant.'" (p. 617) elsewhere, it cites a ruling in "commonwealth v. martin" that "admission of a defendant's mug shot is 'laden for characterizing the defendant as a careerist in crime.