Chavan, who accompanied the PM to Solapur in western Maharashtra for the inauguration of four-laned National Highway Number 9 on Saturday, had to stop speaking during the function as the crowd began to chant Modi's name.
"The suspicion that Modi has dictator's mentality is now coming true," Maharashtra Congress spokesperson Sachin Sawant said here today.
"To the date never a Chief Minister was humiliated in the presence of the Prime Minister at any function," he said.
"Modi supporters created disturbance and the PM did not utter a word. This is dangerous for the democracy," the Congress spokesperson said.
"Similar incident happened with Haryana Chief Minister too at a PM's function," Sawant stated.
"Such incidents were not expected to happen in Maharashtra which boasts of progressive ideology of Rajarshi Shahu, Mahatma Phule and Babasaheb Ambedkar. The Modi mentality is responsible for this," he said.
"Next time, we won't tolerate such incidents. Congress won't keep quiet. Congress opposes not Modi the individual but the Modi mentality," he said.
Sawant also said that recent statements by RSS, VHP and Shiv Sena leaders pose threat to the integrity of the country.
To say that this country belongs only to Hindus is to reject the Constitution drafted by Dr Ambedkar, he said.