Answer
Five hundred years ago, the varṇāśrama system was still prevalent, although it had not yet deteriorated to the extent it did in later centuries. India was less densely populated and more decentralized than it is today, making the social structure quite different from what we see now.
At the same time, there were significant external influences, particularly from Islamic rule, which created social and religious pressures. Despite these circumstances, Lord Chaitanya Mahaprabhu brought about a profound spiritual transformation.
One of His most revolutionary acts was appointing Haridasa Thakura, who was born in a Muslim family, as the Nāmācārya—the teacher of the holy name. This sent a powerful message to the entire Brahmin community and to society at large that spiritual qualification is not determined by birth but by devotion.
Because of Lord Chaitanya's example, the Krishna consciousness movement can confidently state that spiritual life transcends bodily identities such as Hindu, Muslim, or Christian. As Srila Prabhupada repeatedly taught, the soul is beyond all material designations.
The essence of every genuine religion is the development of love of God. If one meticulously follows religious rituals but does not awaken love for God, those practices have little spiritual value. This principle is clearly taught in the Śrīmad-Bhāgavatam.
Therefore, Lord Chaitanya propagated the teachings of the Bhagavad-gita and the Śrīmad-Bhāgavatam, whose message is universal. Krishna consciousness is not another sectarian religion but the eternal religion of the soul (sanātana-dharma).
This universal vision explains why Srila Prabhupada successfully spread Krishna consciousness throughout the world. He never told his followers that by becoming Krishna conscious they had become Hindus. Rather, he taught that nationalities, races, and religions are bodily designations, whereas the soul is eternal.
Srila Prabhupada would often illustrate this with a simple example: if you pinch an Indian and pinch an American, both experience the same pain. Pain is not Indian or American. Likewise, the soul is beyond external identities such as nationality, race, or birthplace.
Lord Chaitanya emphasized the teaching:
jīvera svarūpa haya — kṛṣṇera nitya-dāsa
The constitutional position of every living entity is that he is the eternal servant of Krishna.
He further taught that one should not identify oneself as a brāhmaṇa, kṣatriya, vaiśya, śūdra, brahmacārī, gṛhastha, vānaprastha, or sannyāsī. Rather, one's true identity is that of the eternal servant of the Supreme Lord.
This understanding forms the basis of a universal spiritual culture that can unite not only all human beings but all living entities—animals, plants, and every form of life—on the principle of spiritual equality.
For this reason, Lord Chaitanya's recognition of Haridasa Thakura as Nāmācārya remains one of His greatest contributions. The holy name acts upon the soul, not upon bodily or religious identities. Krishna consciousness is concerned with the Absolute Truth—our relationship with God, the nature of the soul, material nature, and the problem of suffering—not with sectarian faith.