Why is inequality worse in the US blue states

This video is from the New York Times, but is worth viewing. It shows how the Democrat Party dominated states and cities enact policies that are the exact opposite of the party policy – for instance, schools in Cook County/Chicago are funded by Property Taxes on local properties. But because the taxes are given to the nearest school the best funded schools in Chicago are in the wealthiest neighbourhoods, while the poorest schools have no money for basic repairs.