I liked the core idea of this, and that core premise has stayed with me since I listened, coming to mind whenever someone almost kills me on my commute or someone makes a particular jerk statement (just think if the cards came with some kind of capability to track the source of anonymous comments on the Internet).
But the story itself I found pretty lackluster. It spent all of its time just explaining the premise, and the interesting stuff came before and after. And I get that that may have been entirely the intent, that the dreary bureaucracy of dealing with the aftermath of a red card activation is indicative of the "business as usual" nature of this killing.
It seems that everyone in the forum says that the point of the red cards is to make people be nicer to each other. Did the story actually say that? I thought it was meant to be population control, based on on some government committee meeting:
Politician A: The population growth needs to be balanced out.
Politican B: Stop immigration!
Politician A: No. That won't work. People make it into the country one way or the other, and we also need to balance out reproductive growth.
Politican B: Reproductive licenses!
Politician A: Do you want to reduce the country to anarchy? You can't limit people's reproductions without a full-scale country-wide riot on your hands.
Politician B: If we can't control new citizens moving in, and we can't control reproduction, we need to make sure more people die. Let's start a war!
Politician A: No, wars are too messy and unpredictable.
Politician B: Systematic government killing!
Politician A: No, no matter how impartial we tried to be, there'd be accusations of favoritism, governmental racism, sexism, religionism, and so on. You're on the right track though. We let random citizens decide to kill however and whoever they want to. People won't hate us for it because they'll be looking for their lottery win. They can't blame us for any patterns, because those patterns are inherent in the people themselves, not in their government. It's a win-win!
I shudder to think how this would actually turn out, with religious/ideological extremist groups trying to systematically use their red card opportunities and to sway others to use theirs against their opponent of choice.