The police did the same thing in the Cheshire CT murders. They waited outside the house and listened to the mother and her two daughters being raped, strangled and burned alive. That police department is well known for writing traffic tickets for even the slightest infraction. I guess they thought that was all their job required them to do.
Perhaps those officers were just following orders from the Sheriff. Anyone ask the officers themselves or is it not important what they have to say? Apparently not, but it’s OK for some snotty noes kid to accuse them of being cowards.