The exhibition, where photographs showing attacks on the party workers were displayed, was inaugurated at CPI(M) mouthpiece Ganashakti's office by former chief minister Buddhadeb Bhattacharya.
Bhattacharya also released a book titled "Santarsher Andhakar (Darkness of Terror)" .
Several party workers have been killed in attacks by the ruling party's supporters after the Assembly polls, a senior CPI(M) leader claimed.
"Nowhere in India has such a planned and systematic attack taken place to eliminate a political formation and its movement. What is happening in West Bengal is a savage and premeditated attack on democracy, rights of citizens and their right to lead a dignified life," he said.