muckraker

1. That journalist is nothing but a professional muckraker.
   记者是职业性的爱找丑闻的人。
2. The official Xinhua news agency called Ms Pelosi a muckraker of her own hypocrisy who had turned a blind eye to merciless rioters.
   新华社指责佩洛西虚伪，称她对闹事者的残暴熟视无睹。

noun

1. one who spreads real or alleged scandal about another (usually for political advantage)

   Synonym:    mudslinger