The unlovely cities of America, which have seen so many lives frustrated and so many children stunted in body and mind, have in recent years been the scene of rioting on a mass scale.

• 再令人厌恶的美国城市里，多少生命受到摧残，多少儿童的身心得不到发展。近年来，这些城市又成了发生大规模骚动的地方。