Nobel Peace Prize winner and child rights activist Kailash Satyarthi...said he will soon be launching his "most ambitious and longest-ever" campaign against child labour...Satyarthi was speaking at the first K R Naraynan Memorial Lecture organised by the varsity on 'Child Labour: A Human Rights violation and an impediment in economic growth'. "There are 168 million child labourers across the world involved in making various products like the clothes you are wearing, shoes, bags, chocolates and so many other things.