idiom · lit. public opinion is powerful enough to melt metal (idiom); collective voice has an irresistible influence

众口铄金，舆论的力量足以左右一个人的前途。

idiom · fig. public clamor or the mass spreading of rumors can obscure the truth and confuse right and wrong

尽管他极力辩解，但众口铄金，流言蜚语最终还是让他名誉扫地。