Given the emphasis on 'choice' in this article, perhaps the author of it (and anyone reading it) might find interesting an approach to justice that follows from the observation that human beings have no choice but to effect choices, i.e., choose among perceived alternatives and take action to bring that choice to fruition (from Warren J. Samuels). With both the determiner of justice (that observation) and the referents of justice (actions undertaken to effect a choice) contained within material existence, it is a purely materialist ethic, involving no belief.

if curious: "Beyond Liberalism" (here in Medium, but not behind the paywall)