President of the Congress Party Rahul Gandhi (1st L) pays tribute to his father and former Indian Prime Minister Rajiv Gandhi on his 27th death anniversary at his memorial in Veer Bhoomi in New Delhi, India, on May 21, 2018. Rajiv Gandhi was assasinated by a suicide bomber in Sriperumbedur in India's southern state Tamilnadu on May 21, 1991. (Xinhua/Partha Sarkar)?