"Condemn the brutal attack on mediapersons at Gurgaon. Second Attack by Haryana Police on media in 15 days," said Congress spokesperson Randeep Singh Surjewala on Twitter.
"It is shameful that Achhe Din Khattar Sarkar wants to terrorise the press and beat up parents demanding justice," he added.
He had earlier said: "Insensitive apathy and lathi charge by Khattar government on protesting parents demanding justice. Order a CBI probe and take action against school."
At least 50 people, including nine scribes and photo journalists, were injured when police baton-charged a group of people protesting the murder of the student in Ryan International School.