In his commentary (on I.iii.36), Shankara cites Manusmriti (X.126) in denying the purificatory rites for Shudras thus: “The Shudra belongs to the fourth caste and has but a single birth ...
Communism or shudra-ism, necessarily is a false system of commoners (working class) – it cannot ever work. So, decay and destruction in West Bengal since the 1970s Conclusion, Varna is not caste.