Since Viṣṇu is the central point of brahminical culture, Hiraṇyakaśipu’s plan was to kill Viṣṇu, for if Viṣṇu were killed, naturally the brahminical culture would also be lost. With brahminical culture lost, yajṣa would no longer be performed, and for want of yajṣa the regular distribution of rainfall would cease ( yajṣād bhavati parjanyaḥ ). Thus there would be disturbances all over the world, and naturally the demigods would be defeated. From this verse we get a clear indication of how human society is disturbed when the Vedic Āryan civilization is killed and the Vedic ritualistic ceremonies performed by the brāhmaṇas are stopped. Kalau śūdra-sambhavaḥ: because the population of the modern world consists mostly of śūdras, the brahminical culture is now lost and is extremely difficult to reestablish in a proper way. Therefore Lord Caitanya has recommended the chanting of the holy name of the Lord, which will revive brahminical culture very easily.

harer nāma harer nāma harer nāmaiva kevalam kalau nāsty eva nāsty eva nāsty eva gatir anyathā

Because of the increment in demoniac population, people have lost brahminical culture. Nor is there a kṣatriya government. Instead, the government is a democracy in which any śūdra can be voted into taking up the governmental reigns and capture the power to rule. Because of the poisonous effects of Kali-yuga, the śāstra ( Bhāg. 12.2.13) says, dasyu-prāyeṣu rājasu: the government will adopt the policies of dasyus, or plunderers. Thus there will be no instructions from the brāhmaṇas, and even if there are brahminical instructions, there will be no kṣatriya rulers who can follow them. Aside from Satya-yuga, even formerly, in the days when demons were flourishing, Hiraṇyakaśipu planned to destroy the brahminical culture and the kṣatriya government and thus create chaos all over the world. Although in Satya-yuga this plan was very difficult to execute, in Kali-yuga, which is full of śūdras and demons, the brahminical culture is lost and can be revived only by the chanting of the mahā-mantra. Therefore the Kṛṣṇa consciousness movement, or the Hare Kṛṣṇa movement, has been inaugurated to revive brahminical culture very easily so that people may become happy and peaceful in this life and prepare for elevation in the next. In this regard, Śrīla Madhvācārya quotes this verse from the Brahmāṇḍa Purāṇa:

vipra-yajṣādi-mūlaṁ tu harir ity āsuraṁ matam harir eva hi sarvasya mūlaṁ samyaṅ mato nṛpa

“O King, the demons think that Hari, Lord Viṣṇu, exists because of the brāhmaṇas and yajṣa, but factually Hari is the cause of everything including the brāhmaṇas and yajṣa. ” Therefore, through the popularizing of hari-kīrtana, or the saṅkīrtana movement, the brahminical culture and kṣatriya government will automatically come back, and people will be extremely happy.