An example from Mahabharatham—Abettors in Crime:

Considering that war should be a great universal calamity, Dharmaraja (the eldest of the Pandavas) appealed to Krishna to go as an ambassador of peace to the Kauravas. Entering the audience hall of Duryodhana, Krishna described at length the disastrous consequences of war. The great Acharyas—Bhishma, Drona, Kripa and Aswathama --who were present in the court, were intently listening to Krishna’s words. But Krishna’s appeal was no use to them. Because of their long association with the wicked Kauravas, they became abettors in the crime of Duryodhana and others.

Vidura, who was a witness to the evil that was being committed resolved to oppose it. He pleaded with the Kauravas in many ways to listen to the wise words of Krishna. His appeal fell on deaf ears. Rather than stay amongst such evil-minded persons, Vidura felt that it was better to go on a pilgrimage, and left the country immediately. (SSS Vol.19, p. 186)