Twenty years ago, I was there when the Berlin Wall was coming down. What I witnessed about human aspiration in those magic November days in 1989 thrills me even now. But what it showed me about politics may be even more important. “What is freedom?” I began asking people as I waded through the crowd gathered at the Brandenburg Gate. To a middle-aged nurse it meant the flight of her co-workers to the West. There were 17 nurses left on her floor. There had been 50. “It’s bleeding us to death.” She didn’t blame those who had left for better jobs and a better life in West Germany.