'why don't they just go to another neighborhood that has fresh food?'
well then there's very little public transit, you can't really walk most places, in fact you can't get to most places without a car...
very hard to fathom all of this (i truly didn't get it until i moved here) without real life exposure to this country.
the transit and car thing is also an anti-Black thing. i wish i was being hyperbolic.
https://kinder.rice.edu/urbanedge/racism-has-shaped-public-transit-and-its-riddled-inequities