We assume a hierarchical human society; we assume two social classes (U[pper], M[iddle]) for simplicity's sake. The nature of human hierarchies is such that the dominant class get first crack at all the resources. So Class U indulges freely, consuming resources, possibly replacing them with the output of its consumption (the phrasing here intentionally leaves open the possibility that output could be shit as well as goods).

When Class M comes to the table, it too freely chooses the resources it consumes. However, it does not have the same field of options Class U had. In particular, that which Class U has consumed, which fraction may approach 100% of any given resource, is no longer available for Class M's consumption. Also, the output of Class U's consumption is in amongst the field of options (with all that implies).

Over at Women of Color Blog, BFP outlines a scheme advanced by the San Diego County Sheriff's Department to require an I.D. check for all evacuees as they return to their homes in the aftermath of the fires.  Not surprisingly, this inspection is linked to the border patrol/ICE policy and is resulting in many victims of the disaster being slated for deportation:

-Sheriff Kolender, who typically says the Sheriff’s Department does not have the resources to do the federal government’s job of immigration enforcement, has refused to drop his policy of nonetheless helping Border Patrol when identifying potentially undocumented persons despite the tremendous demands on the Sheriff’s Department and the highly unusual practice of setting up military-style checkpoints outside people’s neighborhoods.