I wonder if anyone could have standing to sue a municipality to change the zoning laws on these grounds, under the civil rights act.
Economic segregation is the whole point of density-based zoning. It is widely supported by property owners. If we can't convince them that they are beneficiaries of unjust laws, then the courts are our best option.
[1] https://medium.com/@niranbabalola/we-must-repeal-our-segrega...
Another group is trying to sue Lafayette, Ca http://www.citylab.com/housing/2015/09/suing-the-suburbs-ove...
Edit: fixed first link