Certain successful companies avoid paying the amount of money they are supposed to in taxes through legal loopholes and by hiding how much they are actually paying in complicated reports. Some of the tech and manufacturing companies are the worst because their popularity has resulted in pull with Congress. PG & E, a particularly scandalous corporation right now, has paid zero net taxes since all the way back in 2007. The hope is since this a concern across party lines, the new president will do something to help curb this disgusting trend.
These taxes are supposed to be paid by the well-off. While various schools of virtue ethics might provide wiggle room for the thoughtful to rationalize their actions away, The utilitarian school of thought does not. It is clearly not the optimific response, that is the one that does the most good relative to the bad it causes, to let the people in our society with the most resources give up the least to the people. Even if we the middle managers being trained at universities around the country have enough to content ourselves, we have a duty.