What does the image convey about “toxic subjects” (their character, dynamics, etc.)? (How) Does this image open up the concept of “toxicity”?

The juxtaposed images don't immediately render themselves legible as "toxic" or "ruined," but I think this is part of the point. The accompanying text give the deeper history behind the two images and what the renovated Union Station has replaced. The clean architectural lines and bright colors of the new building hide the more sordid history of displacment and disposession behind the urban renewal project. These juxtaposed images thus ask the view to question what kinds of political and social maneuvers needed to happen Chinatown to transition into a different kind of space.