The people feared to protest openly the injustices in their society. Why would people be afraid of pointing the finger at somebody who is doing wrong? Because they knew that if they did, that would be the end of their advancement in society and at work. They did not want to blow the whistle on anybody else because they would get the reputation of being a troublemaker—and there went their future.
The word prudent indicates anyone who wants to succeed. "You would not want to spoil your prospects with this company would you? Just look the other way. Keep your eyes shut. Sure, we are stealing a little bit. Sure, this isn't quite legal. Sure, the government does not know about these shipments. Sure, we are getting these things into the country illegally. But what difference does it make? If you just keep your eyes shut, the company will pay you, and you will get ahead." Thus, those who wanted to succeed just kept their mouths shut. The evil went on.
On the other hand, the person who has really come in contact with God is so concerned about righteousness that he will do everything in his power to create a righteous community, whether that righteous community is his family, his neighborhood, or his church.