The Supreme Court has refused to ban controversial book `Samajika Smugglurlu Komatollu' written by prominent Dalit thinker and writer Kancha Ilaiah saying that the author's fundamental right of freedom of speech and expression should not be unnecessarily curbed.

A bench of Chief Justice Dipak Misra and Justices A M Khanwilkar and D Y Chandrachud dismissed a PIL filed by a lawyer seeking its direction to the government to ban publication and circulation of the book.

Petitioner K V Veeranjaneyulu, who is also a member of Delhi-based Arya Vy syas Officials and Professional Association, alleged that the writer had made baseless allegations against certain castes in his book and tried to divide the society on caste lines. He also pleaded the court to ban certain chapters of his book `Post-Hindu India'.He said a criminal case had also been registered against him in Andhra Pradesh for hurting sentiments of people belonging to certain castes and urged the court to ban the controversial book.