“Wall writing was considered a subversive activity in those days. The Naxalite movement gave an impetus to wall writing in Calcutta and its suburbs. “Our boys would grab the wall and write ‘All wall for CPIM’. Through the 70s and 80s, wall writing was emphasised as an important form of mass communication by the Left Front parties. And now — in social media times — the old wall has had to yield place to the new virtual wall.

Source: The Telegraph April 20, 2019 18:45 UTC