There is a common 'fiber' (had to make a PUN) to the participants in this thought pattern.
The POLICE, The DA, The DW is GUILTY no matter what crowd.
If the evidence doesn't pertain to showing DW Guilty, then they are not interested in it.
It is not a case of finding the TRUTH and punishing the guilty, it is a case of Punishing the one they picked to be GUILTY, regardless of the truth.
But it happens daily. Once you are in the 'system' you are screwed. The system has to 'devour' you to prove the system is OK.
As one poster said, "They police don't arrest you if you aren't guilty". And that is the way the system (and many people's minds) works.