The Supreme Personality of Godhead is very much interested in brahmanical civilization and cow, brahmaṇya-devāya go-brāhmaṇa-hitāya ca (Viṣṇu Purāṇa 1.19.65). Why specifically cow and brāhmaṇa is mentioned? This means that unless there is this varṇāśrama system in any civilization and there is no cow protection, that is not human civilization.
Namo brahmaṇya-devāya go-brāhmaṇa-hitāya ca: the first consideration is brahminical culture and protection of the cow. Because cow protection is especially mentioned, and brahminical culture, the two things are meant for advancing spiritual consciousness. Because one has to go, transcend, even brahminical culture, sattva-guṇa. And to support the brahminical culture, cow protection is essential.
Without milk you cannot develop the finer tissues of your brain, and without developing the finer tissues of brain it is not possible to understand what is God, what we are, what is our relationship, with blunt..., alpa-medhasām. It is mentioned in the Bhagavad-gītā, tad bhavaty alpa-medhasām (BG 7.23): a little brain substance cannot help one to advance in spiritual consciousness.
Therefore this cow protection and expansion of brahminical culture is essential throughout the whole world. But we should not think that brahminical culture is only limited within India. No. Kṛṣṇa says, cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). What is created by Kṛṣṇa, or God, that is not for a particular country or particular nation. It is meant for everyone. Caitanya Mahāprabhu said, yei kṛṣṇa-tattva-vettā, sei "guru" haya (CC Madhya 8.128).
So this brahminical culture, what we are spreading, this Kṛṣṇa consciousness movement, is brahminical culture. So these boys and those who are initiated, they are offered the sacred thread. Not immediately. Just like there are two students present here: one will be given the hari-nāma initiation, and the other will be given sacred thread ceremony. The idea is that we invite everyone; it doesn’t matter where he is born, because this is universal. Kṛṣṇa claimed, sarva-yoniṣu kaunteya (BG 14.4), "In any species of life, whoever there is, I am the seed-giving father," ahaṁ bīja-pradaḥ pita. In another place Kṛṣṇa said that māṁ hi pārtha vyapāśritya ye 'pi syuḥ pāpa-yonayaḥ (BG 9.32). We may consider somebody as pāpa-yoni, but Kṛṣṇa says that "If he takes shelter of Me," te 'pi yānti parāṁ gatim.