From 2012. A competently executed and lovingly shot piece of depthless vigilantism, indistinguishable from e.g. Robocop. Ma-Ma does not much of anything, and it is rife with anachronistic concepts like testimony. The slo-mo shots probably ate most of the budget and certainly all of the imagination. I'm sure someone wrote a PhD on how this relates to the increasing militarization of policing etc.