Possible Clues:

• Spoiled or polluted
• Article, coloured on the outside with a stain
• Spoiled
• It's not the editor that's corrupt
• Containing pollutants
• Contaminated meat ain't edible? Just slice away outside bits!
• It isn’t a newspaperman that’s corrupt
• Polluted area put in shade by journalist
• No longer pristine
• I attend broadcast that's corrupt