For sure, experience, learning, residues of racism, trauma, etc. are all stored in the body, usually involving the nervous system, often entwined with other systems (e.g., musculoskeletal, immune).
Some of this learning – broadly defined, including the acquisition of learned helplessness, internalized oppression, insecure attachment, etc. – can be clustered in meaningful ways, such as all the various internalized consequences of oppression.
We can get at that material through various psychological (i.e., mental) interventions including bringing awareness to aspects of the body. Some of these interventions will be “top down,” like focusing on unearthing needlessly self-critical thoughts. Other mental interventions will be “bottom up,” like sensing into the pelvic floor and relaxing and releasing buried tension there. We can also get at this material through behavior, in other words, through action – including moving the body, power-posing, yoga, psychodrama, etc., and through hitting the streets, demonstrating, speaking truth to power.
Mental interventions can improve the effectiveness of behavioral interventions, and vice versa. Behavioral interventions are not better than mental interventions and mental interventions are not better than behavioral interventions. And many general-purpose mental and behavioral interventions (e.g., developing self-compassion) that are not specifically targeted at a particular “cluster” or kind of material (such as the impacts of oppression) may still help develop psychological resources (inner strengths) that are useful for that particular material.
People who single out any one of these factors of healing and growth as “not as good as” another kind of factor are missing the point. For a particular individual with a particular issue in a particular situation at a particular time: a particular package of methods could well be optimal – perhaps more tilted toward mental interventions or more tilted toward behavioral interventions. But the value of those particular interventions for that particular person does not mean that there is anything wrong about the other interventions or that they are not useful.
“Positive psychology” has not systematically swerved away from dealing with oppression any more than family therapy, humanistic psychology, or psychoanalysis has swerved away. Fields of psychology or mental health or human potential or spirituality have a general focus by their nature.
Critiquing them for not focusing on a specific issue such as oppression is misguided.
To address oppression, we need to deliberately focus on it and bring to bear all the methods, all the factors, listed above, as well as many more at the level of relationships, groups, and societies. I think this is what we should focus on! Roll up our sleeves and use all the tools and get to work!