The focus should be on whether anyone else helped Tyler Robinson, not just whether he did it — a demand for a wider investigation.

• The real question is not guilt but scope: was anyone else involved in the killing.
• That line of inquiry is easy to pursue but is being ignored, which is the source of the anger.
• It is now easier than ever to push unstable people toward violence without them fully knowing why.
• Online algorithms can spot vulnerable, borderline personalities in comment sections and nudge them toward assassination.

Outlook: Expect continued pressure to widen the probe beyond Robinson himself, with claims that authorities are not looking hard enough.