This scenario does not seem that corrupt. Everyone involved in the case, collectivly, has significant power to destroy evidence, and they would all be facing criminal prosecution.
But the District Attorneys and the Law Enforcment officers have taken the moral equivalent of Holy Vows to do the right thing, and destroying any evidence is obviously the Wrong Thing.
Doesn't law enforcement derive all of their moral authority from always doing the right thing, from treating everyone exactly alike? If there's a significant percentage of law enforcement that is just out to "get someone", they have about zero moral authority.
Doesn't law enforcement derive all of their moral authority from always doing the right thing, from treating everyone exactly alike? If there's a significant percentage of law enforcement that is just out to "get someone", they have about zero moral authority.