How come in the news, If there is somebody who is helping the police with an investigation. That person has a parent or guardian and that person dies why do the parents or guardian either blames or points fingers at the police why?

I happen to be very fluent in Eubonics. Translated to English: "Why is it that when a police informant dies during an investigation, the parents of said informant blame the police for the death?"

Answer: They need someone to blame, so they blame the police. What else is new?