Statement from Seth Rich's parents today, page-6

The thing about a conspiracy theory is that anyone doubting it has apparently been brainwashed, and apparently every single person in authority is part of it.

So if the police say that his computer showed no signs of communication with WikiLeaks, then the answer is "they would say that - these police (faceless individuals) are part of the conspiracy".

Conspiracy theories can never be defeated, as the thinking of conspiracy theorists is hermetically sealed and impenetrable.
Like religion.

Even when the killer is located, like with Mark Chapman or Lee Harvey Oswald the conspiracy theory will not die - it is either claimed the killer has been brainwashed by the CIA, or is a convenient dupe - allowing the real killer or killers to disappear back into the shadows.