It takes courage to speak out against the tide of opinion.

跟舆论趋向唱反调需要勇气。

《牛津词典》

It will probably be uncontroversial because the few remaining climate-change skeptics prepared to speak out against the consensus argue not so much about the climate science as about its consequences.

报告也可能是没有争议的，原因是仅存的准备出声反驳针对共达成共识的观点的气候变化怀疑论者与其说是在争论气候科学不如说是在争论它的结果。

youdao

It is essential that we speak out loud and clear against such abuses.

我们必须站出来大声疾呼，反对这种恶行。

youdao

It's also something that can happen to you if you don't speak out against it.

CNN: Romney caves to far right

First, we can make people aware of this appalling trade and encourage more Europeans to speak out against it.

CNN: Opinion: Scandal shines spotlight on murky horse trade

He commands thousands of workers and billions of dollars in capital yet says he is powerless to stop government's plan to do Wall Street grievous harm--or even to speak out against it.

FORBES: Criminalizing Capitalism