The article says, "One prosecutor is in jail. A former district attorney is facing charges related to sending an innocent man to jail. One county spent nearly $400,000 settling a sexual harassment charge against its DA. Another prosecutor is fighting contempt of court charges after refusing to testify in a prosecutorial misconduct inquiry."
It's a reminder that government officials are no better than the rest of us. They are error-prone human beings too. The difference is, they have a lot of power over us, and they can back up that power with government force.
Libertarians have always said, the more power government has, the more dangerous it becomes.