As soon as we react, we become slaves. A man blames me, and I immediately react in the form of anger. A little vibration which he created made me a slave.
Evil company is always to be shunned; because it leads to lust and anger, illusion, forgetfulness of the goal, destruction of the will (lack of perseverance), and destruction of everything. (Narada Bhakti Sutra)
The devil comes in many guises-anger in the form of justice-passion in the form of duty. When it first comes, the man knows and then he forgets. Just as your pleaders' conscience; at first they know it is all Badmashi (roguery), then it is duty to their clients; at last they get hardened.
There are those who discover they can leave behind destructive reactions and become patient as the earth, unmoved by fires of anger or fear, unshaken as a pillar, unperturbed as a clear and quiet pool.