Access to healthy food is a class issue. Not a new article, but I hadn't come across it before, and it lays things out really well. And if you need more food for thought:
That graphic comes from
this article, which also documents the change in pricing for various types of items from 1978 to 2008. Unsurprisingly, the bottom two items that *dropped* in price were soda and butter; the top two items that *rose* in price were fresh fruits and fresh vegetables.