>> White flight is entirely about anti-blackness and racial oppression. [...] These have been studied in such great detail.

Does international research really support that middle class people leave areas where the crime levels go up only where crime is from people of a different colour?

Not American. I can tell you that the "white flight" efects in Sweden is at least hard to distinguish from flight from bad areas; I lived in a couple of those areas (Gottsunda and Akalla). The main differences were the food prices and the crime levels. Not close to the US ghettos -- yet.