Youth Congress activist Varad Mardolkar was injured when an effigy of Parulekar was burnt by the party members here last evening. Mardolkar is currently being treated at state-run Goa Medical College and Hospital.
Police said they have filed a case against Mardolkar and 27 others. The activists were booked under IPC Sections related to endangering human life, unlawful assembly and burning the effigy by blocking a public road and negligently using petroleum product.
Goa Congress spokesman Sunil Kawathankar condemned the police action, which he said, indicated the "undemocratic mindset" of the BJP-led state government.
"They believe in curbing the freedom of speech by using force. But Congress workers have decided to expose the government," he said.
Parulekar had described the gang-rape of two Delhi-based women near here early this week as a "stray incident" and termed the accused men as "nadan" (naive).
His statement evoked strong reaction from several quarters, prompting him to later withdraw the remark and tender an apology.