The objection is, or was - before the media of yellow hue stepped in, to faking the encounter. Not to the killing of Sohrabuddin. Kausar Bi is a different matter altogether. Genuine encouters are inevitable and the cops have little choice in it. However, stage-managing of encounters and according such encounters back-handed legitimacy would cut both ways. There is always a strong chance that such legitimacy would result in births of monsters for whom nothing matters.
