Historian Ramachandra Guha, who wrote the foreword to the book, criticised the withdrawal. ‘It is deeply disappointing that the institute chose to withdraw the book simply because it. Pune, has removed a book written by jailed activist Umar. The Indian Institute of Science Education and Research (IISER), Pune, had removed Umar Khalid’s book on the Adivasi community amid backlash on social media.