"In his mind, Comey and the other FBI agents who helped out Whitey Bulger didn't do anything evil. He convinced himself it was the right thing to do, the thing he had to do."
How about the FBI hair analysis lab?:
FBI admits that ALL its forensic experts exaggerated hair evidence at every criminal trial for nearly 20 years
http://www.freerepublic.com/focus/f-news/3280821/posts
And then there's BenLurkin's post above...