CPI-M politburo member Sitaram Yechury while stating this at a massive rally, however, took pride in the claim that it was only the Left which could own up its mistakes.
"We have committed some mistakes in the past, but we have rectified those mistakes. It is only the Left parties which can accept mistakes," Yechury said addressing the rally at the Brigade parade ground here.
"We don't crave for power to loot people like the TMC did, but we want power to use it as a tool to serve the masses and the downtrodden," he said.
Former West Bengal chief minister and CPI-M politburo member Buddhadeb Bhattacharya said that the present government was "dishonest and uncivil".
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The party's state secretary, Biman Bose asked party cadres to resist terror against party men by the Trinamool Congress in the districts.
"We need to organise protest against TMC terror tactics. If needed, we need to resist the terror tactics in every possible way," he said.