Just like in USA there is some trouble in recruiting soldiers, because . . . why the difficulty is? The difficulty is the training is like śūdras. The young men are trained up like śūdras—how they can fight? Therefore they are afraid. They try to avoid fighting. Because there is no division. Everyone, in this age, everyone is śūdra. How you can expect a śūdra will be encouraged to fight? That is not possible. Therefore real social structure should be four divisions: brāhmaṇa, kṣatriya, vaiśya, śūdra. Brāhmaṇa, fully engaged for enlightenment of the people, knowledge, spiritual knowledge. They are meant for that. They will cultivate that knowledge personally, paṭhana pāṭhana, and make students, brahminical class. Similarly kṣatriya. They should be trained up in politics, in fighting, not to flee away from fighting. These are the training of the kṣatriyas. Similarly, vaiśyas, they should be trained up how to cultivate, grow food grains, how to give protection to the cows. And śūdras are meant for simply serving these higher class, brāhmaṇa, kṣatriya, vaiśya, śūdra. That is the program.
So Kṛṣṇa is encouraging Arjuna because he is a kṣatriya. Sva-dharmam api cāvekṣya. It is his duty. The rascals should not take example that "Kṛṣṇa encouraged killing. Therefore everyone should kill. There is no sin," without understanding. This is the difficulty. The rascals, they do not understand what is Bhagavad-gītā. They interpret for their favorable condition. That's all. Here is Bhagavad-gītā. They do not read the whole thing from ācārya—misunderstand. Bhagavad-gītā is not encouraging violence. That is not the Bhagavad-gītās purpose.