Unfortunately, it's beginning to look like we're going to have to wait until MAGA has run its course to really delve into this with actual solutions. And I suspect that there will always be a portion of the population that will never come around-they were just drowned out until MAGA woke them up.
There have been a lot of really good books about poverty and/or race in recent years-I'm sure you've read some of them (Caste, On Poverty, Evicted, White Trash, etc).