What I find interesting about this image and about this project is that, as a recognition of the archive as a "toxic place" and more specifically as a pharmakon (in Derrida's sense of both toxin and cure), it has the potential to change, extend, or rather diversify the functions of the archive.
While at first light, it might appear to be a worthy goal of the archive to be fully encapsulating, representative, and comprehensive, the famous distinction between the map and the territory has shown how this futile effort ultimately defeats the very purpose of the archive as an intelligible space. That is, as a space of representation, the exclusion of information is a necessary precondition to the functioning of any archive. However, when these exclusions amount to the erasure of entire lifeworlds of the subaltern, they can also be rightfully described toxic, in that they yeild a representation of history that naturalizes and validates a white-supremacist culture that perpetuates inequalities in the present.
So how does this toxic attribute translate into the "curative" dimension of the pharmakon? Well, the historical archive is both toxic and curative in that it is simultaneously as metonymic of life in a historical era as it is of the epistemological biases and social prejudices that have survived to the present. To employ Jakobson's concepts of speech functions, the archive has a phatic function as a channel of information that opens up access to previous modes of life, but it also has a poetic function, whereby analysts can scrutinize the processes of selection and curation for indices of the more toxic dimensions of past and present structures of feeling. Thus, engaging in this sort of analysis can serve as the "talking cure" described by Freud, where the toxic attributes of the unconscious are brought to the surface in a way that makes them more intelligible and manageable.
This photo especially gets at silence and absence as forms of toxicity. Silence produces toxicity, as does absence. These toxicities actually continue to haunt the archive even today.