The Border was drawn in 1891 and by that time there had grown up a unique border culture by a melding of what had been isolates with intermarriage.
That is what we used to be. Hybrid vigor built Tucson. Not just Anglos although they became part of the mix.
Then came the Sixties and Tucson and the whole area fell prey to MECHA and La Raza forces which divide and conquer.
And now? Adios that vigorous and joyful culture. Hello hatred and revisionist history and ignorant Leftists.
Fair enough. But my point stands. Someone will buy up the real estate once it’s sufficiently devalued and then develop it into something nice. People with money will move in. The neighborhood will change but the new residents will be accused of being racists who are forcing out the poor people. Politicians will act and insist on low income housing quotas, eventually the neighborhood will once again have islands of prosperity surrounded by wastelands dilapidated houses occupied by people who don’t care about the property they never earned or owned. And finally the last outposts of prosperity will flee, leaving behind a combat zone until gentrifaction returns in a couple of generations. This pattern seems pretty consistent in cities (Philly, New York, Baltimore, etc) except in a few spots where it is so bad it can’t take root (Camden New Jersey, for example). Of course all my examples are from the Northeast. Maybe in the Southeast it won’t go that way.