Digging one's own grave: "Pigsy, are you still [acting like] a human?"

A report on the police case regarding the Jeju disappearance, which they self-terminated.
Including a comment like the one below..

And then they ask for someone to refute their comment.

But all of those cases happened when the prosecution had investigative powers...
In other words, paradoxically, it shows that having prosecution investigative powers is practically meaningless..
Furthermore, it shows that checks and balances are working very well, as police crimes are being uncovered and arrests are being made like this.....