Bhagat Singh was not an athiest

His grand father Sardar Arjun Singh had received initiation in Arya Samaj by Maharishi Dayananda himself. He also wrote a book Veda’s and Shri Guru Granth Saheb’s Common Message, for the good of the mankind. Bhagat Singh took inspiration from Veer Savarkar’s great book—1857 war of Independence, and had it published also.