Talking to reporters here, he alleged that such attacks "unleashed by RSS hooligans" clearly showed the "dictatorship mentality of ruling BJP".
"Prime Minister Modi should condemn such attacks," he said referring to yesterday's incident in which two members of Hindu Sena barged into the CPI(M) headquarters in New Delhi and tried to "manhandle" Yechury. CPI-M has blamed the RSS for the incident.
Narayana, who is here to attend the two-day meeting of the party's Tamil Nadu state Committee, said BJP should respect democracy and other political parties.
Narayana alleged that the BJP government was neglecting the farmers just demands such as minimum support price and loan waiver while supporting big corporates.
On reports about Tamil film star Rajinikanth's possible entry into politics, he said people may accept the actor if he floated his own party.
He claimed the actor would be totally rejected if he chose to join BJP.