translation.en: We all know a lot of the statistics, but just to repeat one of them, median income in America has actually gone down over the past 15 years, and we're in danger of getting trapped in some vicious cycle where inequality and polarization continue to go up over time.
translation.zh: 我们都知道很多统计数据， 只提其中一个， 在美国，中产阶级收入的减少 已经持续了15年， 我们处在陷入持续恶化的 不平等与两极分化的 恶性循环的危险之中