If it were two members of the public who had photographed themselves with mutilated corpses, then I am sure those who are pleading that prison is OTT, would not be doing so, and instead insisting these sickos should be off the streets.
But they are Police Officers so respect for the police trumps respect for victims of an heinous crime.
The Police response to the missing sisters was pathetic and useless*, so this just adds insult to injury.
*
https://www.bbc.co.uk/news/uk-england-london-59045471