If a person in 2016 were to travel back in time to 1941, he would be entering a world taken over by violent dictatorships, especially at the hands of Adolf Hitler. Europe was at war and only two countries, Britain and America, still held onto the hope of democracy among the nations. Returning back to the present-day, our time traveler would be astounded by the contrast. Democracy was no longer limited to a few countries but a worldwide phenomenon. The free society, nearly extinct seventy-five years ago, was now flourishing. Yet, extremist movements, reminiscent of the world he just left,...