Any change to the status quo that affects someones finances, you'll see some level of opposition.
https://www.washingtonpost.com/us-policy/2019/04/04/how-sout... (original study: https://www.nber.org/papers/w25700 )
Slightly different analysis, on wealth mobility on a shorter timescale: https://voxeu.org/article/impact-us-civil-war-southern-wealt...