Zàoyáo de rén zài wǎng shàng chéng le guòjiēlǎoshǔ.
The rumormonger became a target of universal scorn online.
Tips
history
From the Ming-dynasty work 《归有园尘谈》 by Xu Xuemo (徐学谟). Almost always quoted in the longer form: 老鼠过街,人人喊打 — 'When a rat crosses the street, everyone shouts to kill it.'
memory
Picture a rat scurrying across a busy street — exposed, in plain view, with everyone yelling and chasing it. The image captures total public disgrace.