It's discriminatory purely as a function of money. The more money you have, the "more equal" you are and the more rights you can exert. It also means the less subject you are to criminal laws, as you can mount a powerful defense as opposed to someone who makes 20k/yr in the slums who is statistically likely to be black or hispanic.
But our society has spoken, that it's ok for poor people to get sent away and their lives destroyed as a primary function of money.
I think much of this bias emerges for two reasons. First, the news we hear is usually bad news. One can only hear so much bad news before developing negative bias. In a large nation like the USA with so many people, abuses of power are almost guaranteed to happen once in a while. It's critical that a free press report on these incidents to keep institutions honest, but an unfortunate side effect of this is negative bias against those same institutions that so often work well and protect us.
The second reason is that institutions do have power over us, and look large in our lives. In comparison to them, we are very small. This can be disconcerting and uncomfortable for some.
The point is that the courts and police, although vilified in this day and age, actually by their very nature do help the poor and destitute. Just maybe not as well as they could, ideally.