West Bengal Chief Minister and TMC chief Mamata Banerjee on Friday paid her tribute to late former prime minister Atal Bihari Vajpayee on his first death anniversary. The Trinamool Congress leader, who had served as the railway minister in Atal Bihari Vajpayee-led cabinet, also urged people to bear in mind his principles of ‘insaniyat (humanism), jamhooriyat (democracy) and kashmiriyat (inclusive Kashmiri culture)’.