useful idiot
noun [ C ] politics specialized uk/ˌjuːs.fəl ˈɪd.i.ət/ us/ˌjuːs.fəl ˈɪd.i.ət/
有用的白痴（指容易被说服去做、说或相信在政治上对某一特定群体有利的事情的人）
a person who is easy to persuade to do, say, or believe things that help a particular group or another person politically
If they let their faith be used as a political tool they become useful idiots for one party or another. 如果他们让自己的信仰被用作政治工具，就会成为一个或另一个党派的有用白痴。
In the past, he praised the politician as a potential ally; yesterday he branded him a "useful idiot". 过去，他曾称赞这位政治家是潜在的盟友，而昨天又说他是“有用的白痴”。
- More examples
- Communist insiders, following Lenin, described people who wanted to believe such fairy tales as "useful idiots".
- He said he was sick of "the whining of Bush and Blair's useful idiots in the liberal media".
- While the former dictator may fool himself, and a few useful idiots on the right, he will not fool us.
- All of these activists, claimed the authorities, were the useful idiots of a red plot.