""America imprisons more of its citizens than any other nation on earth by far, including countries with far greater populations. As the New York Times reported in April 2008: "The United States has less than 5% of the world's population. But it has almost a quarter of the world's prisoners." Professor Glenn Loury of Brown University has observed that these policies have turned the US into "a nation of jailers" whose "prison system has grown into a leviathan unmatched in human history". The New Yorker's Adam Gopnik called this mass incarceration "perhaps the fundamental fact [of American society], as slavery was the fundamental fact of 1850".""