translation.en: But when it comes to cities, the conversation is dominated by the North, that is, North America, Western Europe, Australia and Japan, where violence is actually at historic lows.
translation.zh: 但说到城市， 话题大都由北部地区主导， 所谓北部地区， 是指北美、西欧、澳洲和日本， 这些地区的暴力率 处于历史新低点。