The phrase "disgraced cop" refers to a police officer who has done something wrong or bad, causing them to lose respect, honor, and trust. Full definition
«The Hard Goodbye» has Marv (Mickey Rourke) an brutish ex-convict who avenges the murder of prostitute Goldie (Jamie King) that he had fallen in love with; «The Big Fat Kill» where private detective Dwight (Clive Owen) finds himself helping hookers fight mercenaries from the red light district and «That Yellow Bastard» sees disgraced cop Hartigan (Bruce Willis) protect dancer Nancy (Jessica Alba) from a psychotic sadist and sex offender (Nick Stahl). (markedmovies.org)
The script, written by Jeremy Drysdale, «tracks disgraced cop, Kyle Penny (Eckhart), on his hunt to rescue Police Commissioner Volk's kidnapped daughter, trapped somewhere in the city with only 80 minutes to live.» (slashfilm.com)
Finding no help from the law, grieving father Gidi (Tzahi Grad) and disgraced cop Micki (Lior Ashkenazi) take it upon themselves to hunt down the killer and extract the truth, and revenge, by any means necessary. (flicks.co.nz)