The demonstrations took place outside PVR cinema in Vasant Vihar of south-west Delhi and Gagan Cinema in Nand Nagri of north-east Delhi this morning.
They also raised slogans against the movie demanding ban on its screening across the country.
"The screening of the movie should immediately be banned as it hurts the sentiments of Hindus. Besides, an FIR should also be registered against the star cast of the movie," said a protester.
In Vasant Vihar, some activists of Bajrang Dal burnt the posters of 'PK' outside PVR here and raised slogans against the movie.
Demonstrators also burnt the effigy of actor Aamir Khan. Bajrang Dal activists also staged protest outside Gagan Cinema here, demanding a ban on the movie.