We have had this discussion before. It has been well documented that Catholic ghettos were targeted for destruction by rezoning, highways, and real estate scams. It is the sad truth in NYC. Tim saw it, as did my mother live it.
I have never seen this suppossed "documentation". I'm sorry for whatever happened to your mother. I set the context for my knowledge and experience. My maternal grandmother, two paternal great aunts, two maternal aunts all stayed in their homes and parish in the Capital Hill neighborhood of Seattle until their deaths in the '70s and 80's. Nobody pushed them out.
No one is arguing that there haven’t been major changes in the urban landscape, both good and bad. The same can be said for the rural landscape as the nature of modern agricultural production has changed and it requires far fewer people to produce the food and fiber for the nation. After WWII new factories and offices, new housing, and new roads to move people between the two had to be built to accommodate the post war urban growth. Those things had to go somewhere ~ wherever they went somebody
would be whining about it because they thought they should go somewhere else. As far as I can see more often than not they went in the most logical places though undoubtedly a few
examples can be found where, in hindsight, another placement would have worked out better. There is no credible documentation that Catholic neighborhoods were specifically targeted.