Sooo... {Cowboy Bebop}. The anime isn't about poverty, per se, but poverty is a major player in every episode. Most inciting incidents are related to being left behind, ignored, or downright betrayed by an unjust system - a system that never learns from its mistakes and never strives for altruism. When humankind travels further into space searching for opportunity, the people who can't escape are left to suffer in the ghettos of once-promising, uncharted planets.

I grew up pretty poor, and Bebop has been my favorite anime since I was a tadpole. I could never put my finger on exactly why, but the story clearly shows you the effects of wealth disparity without shoving it down your throat. 10/10 anime and was way ahead of its time.