New Delhi: The nation paid homage on Monday to former Prime Minister Rajiv Gandhi on his 21st death anniversary. President Pratibha Patil, Vice-President Hamid Ansari, Prime Minister Manmohan Singh and Congress President Sonia Gandhi were among the first to pay floral tribute to the late leader at â€œVeer Bhumiâ€, the memorial of Rajiv Gandhi. Rahul Gandhi and Priyanka Gandhi Vadra also paid floral tributes to their father who was assassinated on May 21, 1991 at Sriperumbudur in Tamil Nadu during an election campaign. Priyanka Gandhiâ€™s husband Robert Vadra was also present. May 21st will be observed as Anti-Terrorism day to commemorate the death anniversary of former Prime Minister Mr. Rajiv Gandhi. On his way to address an election meeting he was garlanded by many school children and party well wishers. Assassin Dhanu got an opportunity to mix with the crowd and execute her merciless, treacherous plan. Rajiv Gandhiâ€™s murder had left the whole nation in shock and emotional outburst. Since then, the day is celebrated as Anti-terrorism day in the honor of our former Prime Minister. Terrorism is the most brutal form of crime that human beings can ever commit; it has also become a fear factor for Indians and the world. The purpose of celebrating this day every year is to keep our youth away from indulging in such wrong activities risking their lives along with risking lives of several other innocent people. The responsibility of driving this fear out of our society solely lies on our shoulders. On the day, people are made aware of heinous terrorist activities and their after effects on the society.