THE Tamil Nadu Platform for People's Unity (TNPPU) had organised a historic human chain programme across the state with a participation of over 40 lakh people from all sections of the society, protesting against the Citizenship (Amendment) Act (CAA), National Population Register (NPR) and National Register of Citizens (NRC), on January 30.The TNPPU organised a convention on December 26 at Saidapet in Chennai, against CAA, NRC and NPR in which Prakash Karat, P Chidambaram, Kanimozhi, Thol Thirumavalavan, Professor Jawahirullah of MNMK and other leaders participated.