I don't know where this thing happen, but it should be at rural and ungated areas. Local citizens are not well educated, and so they are ignorant.

我不知道这个事情发生在哪里，但应该是在农村或比较闭塞的地方。当地人没有受过很好的教育，所以很愚昧。

youdao

The characteristics of an ungated overflow spillway are investigated. Some important design aspect and hydraulic computation methods for the spillway entrance zone are discussed.

本文分析了无闸控制溢洪道的特点，讨论了溢洪道进口段水力设计中的几个主要问题和水力计算方法。

youdao

An ungated version of the paper Yglesias refers to is here.

FORBES: Why France's 75% Income Tax Rate Is Going To Be So Disastrous

For instance, in 2005, the Orlando Sentinel looked at sheriff's reports over a four-year period on 1.400 Florida homes in both gated and ungated communities that were similar in price and location.

WSJ: Should You Buy in a Gated Community?--WSJ House Talk