Starting early in the morning on the second Saturday of May, first hundreds and then thousands of people gathered in the square in front of Hungary’s majestic Parliament building to celebrate the start of a new political era. This was the square where tens of thousands gathered in 1956 and 1989 to demand an end to the Soviet occupation and in 2006 to protest a discredited government. It was the square on which Prime Minister Viktor Orban’s regime imposed a major redesign more than a decade ago —