A Hong Kong lawyer violently beaten by rioters on Sunday has urged that the upcoming national security law (should) be implemented as soon as possible so that violent protesters can no longer "act unscrupulously at their will."

1. urge （强烈要求）+ that + 主语 + (should) be implemented

被动语态，省略 should 的结果。

2. 类似例句：

The report urged that all children ( should) be taught to swim. 

那份报告主张所以的孩子们都要学会游泳。

Students urged that the library (should) be opened on weekends. 

学生强烈要求周末图书馆要开放。

She urged that a cost-benefit analysis (should) be performed before moving forward. 

她要求在推行这个计划前，先进行成本-效益分析。

He has urged that private firearms (should) be banned. 

他极力要求禁止私人拥有枪枝。

They urged that the library (should) be kept open during the vacation. 

他们要求图书馆假期也开放。

People urged that slavery (should) be abolished. 

人们力言应废除奴隶制度。