The āsuriṁ bhāvam āśritaḥ means demons. There are two classes of men, demon and god. Not the Godhead, God. Those who are Vaiṣṇavas means obedient to the Supreme Personality of Godhead, they are also god or godly. And those who are not obedient, they are demons. This is the difference between demon and God or godly. So there are two classes of men always in this material world. In the spiritual world, they are all gods, godly. Kṛṣṇa is the Godhead and all living entities there, they are godly.
So in the spiritual world there is no facility for the demons. Therefore when Kṛṣṇa likes to fight, because after many many years not fighting, because in the spiritual world there is no fight. All obedient servant, where is the possibility of fighting? Therefore sometimes He comes here to fight with the demons. (laughter) Just to get the body fit. (laughter) Yes. Therefore sometimes when there are scarcity of demons, some of the devotees, they come and become a demon. Not become demon, just Kṛṣṇa wants to fight, so without demon, how Kṛṣṇa will fight? Therefore they play the part of demon so that Kṛṣṇa—that means they want to serve Kṛṣṇa. Kṛṣṇa wants to, just like sometimes big men they keep some wrestlers to make mock fight. Similarly, to serve Kṛṣṇa, Kṛṣṇa has desire to fight so they come down and become just like a demon and fight with Kṛṣṇa.