-Gandhi: untouchability, caste system
-raja rammohan Roy: sati and female illiteracy
You can start with: India, the country of diversity and a rich cultural heritage and the cradle of human civilization, is now beset with a number of social evils that one shudders to even think of them. Our heroic and brave freedom fighters tried to battle these evils but try as they did, these unethical practices were so deep-rooted that some of them couldn't be wiped off. Even today, in the 21st century, the age of economic and social advancement, India struggles to keep up with the rest of the world due to some of these evils that are still prevalent even today.