Doxa is a term used in sociology to contend with belief and orthodoxy without reducing either to behavior or cognition. It explores disposition and embodied belief—the gut sense of the world which is acquired through practice rather than discourse.
Diaspora might be a problem for political progressives for the very reason that it is so alluring. Diaspora promises both freedom and connection: freedom from national borders or the essentialisms of race and language, connection between people who affirm shared memory and heritage.
But heritage is never really free.