By Sanjib Kr Baruah New Delhi, Nov 23 : In a gathering of anti-dam activists in Assam, a small boy of about seven is asked whether he knows why he has come. “Brihot nodi bandhor biruddhe (to protest against mega dams on rivers),” he replies confidently in Assamese. The issue of the construction of an intricate network of 168 dams, largely mega, in Arunachal Pradesh, has put people there...