Was Israt Jahan a terrorist? Did P Chidambaram manipulate intelligence reports? Valid questions, all — which need to be asked, and answered and, where necessary, cases filed and action taken against those guilty of any shade of impropriety.
However, none of this removes from the books the other open question: Was Israt Jahan a case of extra-constitutional killing?
Vrinda Grover, on that question and more, is worth your time.