While the caption presents the case quite clearly. The idea that this "clean" city is actually toxic for some of its residents is implicit, but the notion has the potential for a more nuanced discussion using the terminology of toxicity.
To be honest, I struggled with the caption. It is short and descriptive. While I previously mention relationships between populations being classified as 'pollutants' thereby there marginalisation framing the 'liveability' of a city I feel like I am imposing a reading of the image and caption . The caption could really do with some reflexive writing to link it to discussions/debates about population, racialised liveability measurements, urban placemaking, pollution, and toxicity. While the image has text about climate action I cannot it is difficult to connect up with the rest of the image.