There is a lot of practical evidence of Shuudras learning Vedas and being revered by Brahmins. Most of the 12 Azhwars of Tamil Vaishnavite tradion were from the "4th varna". One of them, Nammazhwar is celebrated as 'Vedam Thamizh Seidha Maaran (one who rendered Vedas in Tamil)", and another Thirumangai Aazhwar is said to have rendered in Tamil the 6 "Angas" of Vedam. Brahmin Tamils (Aiyangars) worship these Aazhwars everyday in TN's Vishnu temples.
