Asaph, our ancient Protester (Protestant?) is talking about the conscienceless ultra-rich and powerful oppressors of the underclasses of his time. He asks all the sorts of question which any person with a still functioning conscience and sense of justice and right and wrong would ask today. He might even have been looking at the oppressive rule of Israelite Kings as he wrote this, or at least at some of his oppressive officials who, like the bloatedly opulent Kings, were using their high offices and trade and business connections to grow richer and richer while oppressing, over-taxing, and gouging the poor farmers and laborers.