Katie Couric is upset that an eight-second pause inserted into an interview she did with gun rights activists in the documentary “Under the Gun” has drawn criticism, calling the edit an “unnecessary mistake,” according to an individual with knowledge of her thinking. The individual spoke to TheWrap and said that director Stephanie Soechtig inserted the pause, which critics are calling an example of “deceptive” and “appalling journalism.” “This was an unnecessary mistake,” the individual told TheWrap. “It did not represent editing someone’s sentences, there was no factual error, this is not a mistake that is a substantive mistake. It could...