You can tell it's propaganda because of the rampant question-begging. The author isn't "simply pointing out racism is absent in the game." Here is a direct quote from the Kotaku article:
In the same interview he also admits that, in the U.K., incarceration is not a major issue with huge class and racial implications as it is in the U.S.. Thus, as Brits, they may see the world in a different way.
Note the presupposition: Incaceration in the US has class and race implications. That is the dogma. That is the "message." The next several paragraphs discusses the state of prisons in the US, linking to biased sources with sensational language like "out of control."
Now, you could claim that this tangent is needed to establish the relevance of the subject, but the manner it is presented strongly points to the fact that this is simply a propaganda payload. There's this:
The America justice system disproportionately and purposely targets minorities, which make up about 60% of the population behind the bars, according to the Center for American Progress.
Again this is propaganda. Question-begging. This isn't part of some kind of intellectually open enquiry about prisons, video games about prisons, or even prison simulations. This is one-sided preaching about a subject completely unrelated to videogames.
> Well, I didn't write the article; I merely said I think the author has a point
You did phrase a portion of comment in a way that took responsibility for the idea. Obviously incarceration in the US is racist, right? We're talking about how a videogame designer chose not to focus on this obvious truth about how incarceration is racist especially in the US.
PS to whoever is downvoting me: I have made my post less sarcastic. I will endeavor to be more respectful however it is worth anyone's time to study propaganda and how it works, so as not to be so easily fooled. It's important to be able to recognize it and not excuse it with "oh he's just pointing out <etc.>"