Is exposing immoral behavior divisive speech?

Imagine a journalist writing about the crimes of a mafia boss or corruption in a dictatorial government, and other people pounce on history and share it on social media. Is what the Jornalist and/or those who spread his articles do divisive speech? Keep in mind that this type of news is mainly read for entertainment and will cause ill will against the perpetrators in most readers. On the other hand, this type of journalism is an important mechanism that ensures that corruption does not spiral out of control. Bonus question: Is journalism right livelihood?