President Pratibha Patil (centre), Prime Minister Manmohan Singh (left), Defence Minister A K Antony (2nd left), the three service chiefs (seen in the middle in the same row as Singh) and others saluting to Mahatma Gandhi at the Gandhi memorial at Rajghat in New Delhi on Monday, on his 64th death anniversary, observed in the country as Martyrs' Day. Gandhi, who led India's freedom struggle, was assassinated in New Delhi on January 30, 1948 when going for a prayer meeting. PTI Photo