Semper Augustus

In a future United States, automation technology provided by alien visitors has made large numbers of people unemployed, scraping for survival outside of wealthy enclaves where the rich live in luxury and plenty. A gifted young woman who has grown up poor is given the chance to join the wealthy people, but after a while her enjoyment of her new situation sours, and, realizing that she really wants to change things for the poor, she joins an underground rebellion.