I spent some of my life watching people on TV demanding to defund the police and all the other nonsense while they lived in low crime areas and didn't have to suffer from the policies they are promulgating on poor people. I wish trump would do this where I used to live to be honest.
That being said, I would like to mention a basic theory that I have. If you're poor, you're often forced to buy the cheapest options in terms of housing or used cars, etc. When a neighborhood improves and is "cleaned up", property values and rents rise. Suddenly the neighborhood you live in is becomes unaffordable for poor people.
Essentially, there is an economic trap: affordability often comes bundled with low quality, and improving quality often erases affordability when talking about things like used goods or housing. It's not necessarily clear that poor people are the recipient of the benefits of lower crime in inner cities, because without high crime rates, inner cities are prime top tier real estate.