once krishna said

Dalits are the favorite topic of anti hindu and anti national forces to defame India and it's largest practiced culture (hinduism) What if I say it's entirely societal not from scriptures. Check the following verses jātau vyāsastu kaivartyāḥ śvapākyāstu parāśaraḥ | bahvo'nyepi vipratvā prāptā ye pūrvā advijāḥ || The sage Vyasa was born of a fisherwoman, and Sage Parasara was born of a Chandala, many were those who though not previously brahmins attained brahminical status. (M.B. Aranya-parva 312. 106 .) The Mahābhārata also says that it is the qualities of a person that matter - not their birth status. satyam, dānam, kṣamā, śīlam anṛśāsyam tapo ghṛṇā | dṛśyante yatra nāgendra sa brāhmaṇa iti smṛtiḥ || O King of serpents, he in whom are manifest truthfulness, charity, forbearance, good conduct, absence of malice, austerity and compassion is a Brahmana according to the sacred tradition. (M.B. Aranya-parva 180. 20). ...

So it doesn’t matter how many verses in puranas  it only matters what the shruti (  Vedasa and upanishads) teach. The principal verse in the Veda describing the caste system comes from Rig Veda 10:90:12 - this verse is the supreme judgement in this matter - It says that the four castes are the limbs of society like that of the Cosmic Being. How does it describe them? From the mouth of the Social Being - the Brahmins arose. From the arms - the Kshatriyas were created. From the thighs the Vaishyas too [were created] From the feet - the Shudras were BORN. So this seminal verse on the varna-system clearly states that the 3 varnas are “created” but only the Sudra Varna is born. This is then confirmed in the Upanishads (Vajra-sūcika Upaniṣad) many Smritis and Itihasas . This is the case of uniformity of birth established — EVERYONE is born a Sudra by DEFAULT. Confirmed in the Mahābhārata:– The cause of brahmanhood is not birth, or sacraments, or learning or pro...