JOEL KOTKIN: How Liberals Are The New Autocrats: Progressives may preach the joys of localism, but the trend in government is all the other way in everything from climate change to the economic complexion of your neighborhood.

This could be how our experiment with grassroots democracy finally ends. World leaders—the super-rich, their pet non-profits, their media boosters, and their allies in the global apparat—gather in Paris to hammer out a deal to transform the planet, and our lives. No one asks much about what the states and the communities, the electorate, or even Congress, thinks of the arrangement. The executive now presumes to rule on these issues.

For many of the world’s leading countries—China, Russia, Saudi Arabia—such top down edicts are fine and dandy, particularly since their supreme leaders won’t have to adhere to them if inconvenienced. But the desire for centralized control is also spreading among the shrinking remnant of actual democracies, where political give and take is baked into the system.

The will to power is unmistakable. California Governor Jerry Brown, now posturing as the aged philosopher-prince fresh from Paris, hails the “coercive power of the state” to make people live properly by his lights. California’s high electricity prices, regulation driven spikes in home values, and the highest energy prices in the continental United States may be a bane for middle and working class families, but are sold as a wonderful achievement among our presumptive masters.

Under President Obama, rule by decree has become commonplace, with federal edicts dictating policies on everything from immigration and labor laws to climate change. No modern leader since Nixon has been so bold in trying to consolidate power. But the current president is also building on a trend: Since 1910 the federal government has doubled its share of government spending to 60 percent. Its share of GDP has now grown to the highest level since World War II.

Today climate change has become the killer app for expanding state control, for example, helping Jerry Brown find his inner Duce. But the authoritarian urge is hardly limited to climate-related issues. It can be seen on college campuses, where uniformity of belief is increasingly mandated. In Europe, the other democratic bastion, the continental bureaucracy now controls ever more of daily life on the continent. You don’t want thousands of Syrian refugees in your town, but the EU knows better. You will take them and like it, or be labeled a racist.

This will not end well.