“well, you can go visit the neighborhoods that used to be Italian but they were driven out due to brutal crime by guess who? then get back to me.”
I can tell you that things worked differently in NY. They didnt wait for a crime wave. The first black family on a block caused a cascade of selling since they knew the property values were going to plummet (and they did).
Ted White described it in the book and chapter referenced in my post. He went into it partly from personal knowledge, since he was a New York reporter in his day job, and partly because it was germane to the politics of 1964 in both parties as they responded to the challenge of black violence, black politicoeconomic blackmail by entrepreneurial Trotsky-wannabe's, and white "backlash" </cant>.
The trigger for the 1964 riot was a racial violence incident initiated by YBM's; the driver was the process you and I were discussing.