Recalling Swami Vivekananda’s message of universal brotherhood, Prime Minister Narendra Modi on Thursday said had his message been followed history would never have witnessed dastardly acts like the 9/11 terror attack in the US. Marking the anniversary of Vivekananda’s message of universal brotherhood, the Prime Minister noted that the soul-stirring address was delivered at the World Parliament of Religions in Chicago on September 11, 1893.