Kallol was the main mouthpiece for a group of young writers starting their careers around that time including Premendra Mitra, Kazi Nazrul Islam, and Buddhadeb Basu.
[1] In 1921, Gokulchandra Nag, Dineshranjan Das, Sunita Debi, and Manindralal Basu set up the "Four Arts Club" at Hazra Road in Kolkata to discuss and practice literature, painting, music, and drama.
Tagore himself joined the debate and published an essay in Kallol where he mentioned that he appreciated the literary effort, but found that the demand for realistic literature was just "the flaunting of poverty" combined with the "unrestraint of lust".
The Kallol members, on the other hand, heavily influenced by Sigmund Freud and Karl Marx, did not deny that they loathed an idealist's version of a "higher" individual.
[1] Nazrul would establish a rebellious streak in Bengali poetry, Mitra, a Chekhovian grasp of the short story and Basu would inspire a generation of poets with his little magazine group Kabita.