[Former Proud Canadian]

Avery was/is not a nice person. The kind of person who was a pain to local law enforcement. Always getting into trouble, and causing it.

In the first case, they saw a way to rid themselves of a lot of headaches. I'm sure the rationale was, "maybe he did it, maybe he didn't, but he did a lot of other stuff we couldn't get him for." Victims can be "encouraged" to make a positive ID.

[Eagles6]

The victim's burned human remains in the burn pit outside his front door and Avery's blood in her car are enough for me.

Again, multiple, psychopathic LEOs engaged in a truly evil, decades long conspiracy that no one leaked anything about or small town, inexperienced law enforcement and an agenda driven movie.