Śrīpāda Rāmānujācārya has explained, that āsuraṁ bhāva means disobedience to the order of God. That is āsurīm. And devānām means obedience to the order of God. There are two kinds of men: daiva āsura eva. Viṣṇu-bhaktaḥ smṛto daiva āsuras tad-viparyayaḥ (Padma Purāṇa). Simply one who carries out the order of Kṛṣṇa, he is devatāḥ, and who does not carry out the orders of Kṛṣṇa, he is āsura. These things are explained in the Bhagavad-gītā very nicely.
So I am only requesting that Kṛṣṇa consciousness movement, that originally we are all Kṛṣṇa conscious, just like the water when it falls down on the ground it is distilled, clear water, but as soon as it touches the earth it becomes muddy. Similarly, because we are part and parcel of Kṛṣṇa, we are all as pure as Kṛṣṇa. Kṛṣṇa is accepted in the Bhagavad-gītā by the statement of Arjuna: paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān (BG 10.12). Kṛṣṇa is paraṁ pavitra, pure, the purest, apāpa-viddha. So we, being part and parcel of Kṛṣṇa, we are also paraṁ pavitra, but due to the material contact of these three modes of nature we have become polluted. The exact, in the same way, as we are part.
So how we have fallen down, why you have come to this material world, how we can revive our again Kṛṣṇa consciousness, these are the subject matter of this Kṛṣṇa consciousness movement. We appeal to you: try to understand this movement. Enjoy with full heart, and do some welfare activity to the human society.