"This is not the first time the ABVP has abused its position of power and has beaten up a professor. The incidents of violence by the ABVP are increasing day-by-day. They have made the campus unsafe," alleged Kawalpreet Kaur, the DU AISA president, in a release.
The Akhil Bharatiya Vidyarthi Parishad (ABVP) is the students' wing of the BJP.
The college administration had said Phogat was denied marks because of his poor attendance.
The release also referred to a previous instance, in which the ABVP's Satindar Awana had allegedly thrashed a professor on being denied permission to use the swimming pool on the SRCC campus.
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"When a students' union representative assaults professors openly, how can common students be safe? We demand Phogat's immediate rustication," said Kaur, adding that it was nothing but a "display of muscle power".
"The DU not just silently watches these incidents of goondaism, but gives full impunity to these groups. We believe that such acts of violence and intimidation of professors cannot be done without the full support of Delhi Police, who takes order from the BJP government," the students' body said.