<span style="color: #222222;">Vice President M Venkaiah Naidu today paid tribute to great freedom fighter, nationalist and educationist, Maulana Abul Kalam Azad on his birth anniversary. In a tweet, Mr. Naidu said, Maulana Abul Kalam Azad strove to promote national unity and value-based education. The Vice President said, he will always be remembered for his invaluable role in India's freedom struggle. </span><br />