New Delhi, July 23 -- A recognised independent student body at the Indian Institute of Technology (IIT) Madras has alleged that institute officials asked it to delete an Instagram video posted in support of the ongoing student protests over examination irregularities and denied permission for a peaceful gathering, saying the event could "disrupt" the institute's relations with the Centre and "tarnish" IIT Madras' image. IIT Madras administration did not respond to HT's request for a comment....