Tumkur, April 28 (ANI): On her visit to Tumkur, ahead of the 2013 polls, Congress supremo Sonia Gandhi today said that many people in India were still subjected to discrimination and depravity. Addressing a rally, organized on the occasion of the Tumkur Mutt Swami s 105th birthday, Sonia said that education was the greatest tool to combat poverty. Sonia further stressed on the approach of scientific temper of questioning.