That is the last stage of Kali-yuga, and at that time Kalkī avatāra, Kalkī avatāra will come. At that time there is no preaching of God consciousness, simply killing, simply killing. Kalkī avatāra with His sword will simply massacre. Then again Satya-yuga will come. Again golden age will come.
So this problem of fighting... We have to understand that fighting spirit is there in everyone. You cannot check it, you cannot stop it. We do not say stop. The Māyāvādī philosopher says that "You stop this thing," but that is not possible. You cannot stop. Because you are living entity, you have got all these propensities. How you can stop it? But it should be utilized properly. That's all. You have got the fighting spirit. How to utilize it? Yes. Narottama dāsa Ṭhākura recommends, krodha bhakta-dveṣī-jane: "Those who are envious of God or God's devotee, you can utilize your anger upon them." You can utilize. The anger you cannot give up. Our business is how to utilize it. That is Kṛṣṇa consciousness. Everything has to be utilized. We do not say that "You stop this, stop that." No. Kṛṣṇa says, yat karoṣi, yaj juhosi, yad aśnāsi, yat tapasyasi kuruśva tad mad-arpanam (BG 9.27). Yat karoṣi. Kṛṣṇa does not say that "You do this, you do that." He says, "Whatever you do, but the result should come to Me." So here the position is that Arjuna is to fight not for himself, but he is only thinking in terms of himself.