Could it be repealed via a legal case? I suspect any law that effectively says "established residents have next to no property tax while new residents have the

Could it be repealed via a legal case? I suspect any law that effectively says "established residents have next to no property tax while new residents have the tax recalculated" would definitely affect some protected groups negatively compared to others. In which case this law cannot exist right? You can't make a law that has a negative effect on a protected group specifically, even if unintentionally. We had a proposition in Palo Alto that only local residents could use some of the parks. That was challenged and now doesn't exist as you can guess how police identified non-locals. Can we do the same for prop 13?