This has been done before with cities who were more egregiously discriminatory with their zoning, as I mention in the long form of this argument[1]. I don't know what hurdles are in the way of using the courts to end this subtle segregation, but we should definitely find out and make it happen.

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...

I think we are already convincing people with the cultural benefits. Who doesn't want to live in a neighborhood where the people who defined that neighborhood are still around as your neighbors, to be together in public places and share in the uniqueness of your home together. I believe the homeowners of this generation do want this.

Yuma Az was just successfully sued for zoning laws under the fair housing act. http://www.citylab.com/housing/2016/04/court-decision-on-dis...

Another group is trying to sue Lafayette, Ca http://www.citylab.com/housing/2015/09/suing-the-suburbs-ove...

Edit: fixed first link