Absolute income (whether measured in dollars or purchasing power) means very little when compared across time periods or countries. Poverty has never been about your absolute buying power. It is relative to the society you exist in. You will find, by any objective measure, that the wealth disparity in the US is nearly as high as it has ever been (only exceeded by the Great Depression). These same objective measures will consistently score the US as worse than many developing countries.

You will find across many eras and cultures in the last two millennia that the poorest members of the society are the most vulnerable members of society and the most likely to be punished for committing crimes. If you still don't believe me, read this paper for an in-depth analysis that controls for many factors: https://web.worldbank.org/archive/website01241/WEB/IMAGES/IN...

Laws are made by those with power. In today's society, power comes in large part from wealth - that's the foundation of capitalism. The objective of capitalism is to accrue capital, and our laws and police system are set up to protect the wealthy and their wealth.

That's why graffiti is punishable by ten years in prison. Stealing a week's worth of groceries can mean years in prison. In contrast, the penalty for illegally evicting a renter, rendering them homeless, is about two or three months rent, and no prison time.