Poor people. What they don’t like is the occasional encounter with homeless or any other societal ill. That’s supposed to be swept into poor people’s neighborhoods “as to protect the historical value and do justice to the land owners who invested in this region”.

In other words, egotistical people and conservatism. No amount of number crunching about the likelihood of increased property values with increased urbanism suffices; the way they value their place is by proximity to “undesirable” people.