"We are agonized over the fact that the first ever lady President of Allahabad University Student's Union Richa Singh, a PhD scholar, is being harassed by the administration...," the parties that included Congress, Left and AAP said in a joint statement.
CPI general secretary S Sudhakar Reddy separately asked the BJP-RSS combine to "keep off" Allahabad University, alleging that RSS students wing ABVP was trying to "saffronise" it after "targeting" JNU and HCU, and sought action against those trying to "create tension" at its campus.
"First we saw the sacrifice of Rohith, then the Kanhaiya episode and now Richa Singh episode is in the process."
Drawing parallel with dalit scholar Rohith Vemula's suicide in Hyderabad University and the JNU row involving Kanhaiya Kumar's arrest, leaders from the eight parties in the joint statement trained their guns on Irani, reminding her that she is a minister of the entire country and not just the RSS and BJP.
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"A government, which refuses to learn that autonomy of education institution is foundation of democracy, is sowing widespread discontent in campuses by its blatant support to ABVP's goondaism," they said.
Noting that Richa Singh had won as an independent candidate in Allahabad University while all the other seats were won by ABVP, the leaders claimed she was in the eye of the storm for protesting against a visit of firebrand BJP MP Yogi Adityanath to the campus.
"We are aghast that University administration across the region are hunting students, who have a different view than the ABVP," they said.
Alleging that the HRD Minister is acting like the "patron saint of ABVP", they said, "we wish to remind her that she is a minister of this vast, diverse country and not just the RSS/BJP.