For completeness, I am adding Part II of the Kazi Nazrul Islam (renowned Bengali poet, 1899-1976) anti-casteism poem, Jaater Name Bajjati Shob (The Caste Hooligans, by this translator) which adds more pronouncements against the destructiveness of casteism and racism in human society. These stanzas do not appear in the portion which is composed into a song from the 1940s.