You are pretty far from the mark here... A study as far back as 2002 recognised the US as an oligarchy — i.e. not a democracy. And to call their legal/judicial systems or process “highly functional” is also pretty laughable.

George Floyd shouldn’t have come into the line of fire of these systems, he was an innocent man. The fact that it was and is so difficult to prosecute the responsible officer shows how dysfunctional the system is.

Using shame as a system of justice relies on emotional charge at the point of infraction. I would argue that’s how mob justice starts, not how we end injustice.