They came by them somehow. If the nature of someplace’s justice system is that a death sentence comes with a “turned-to-plastic-and-paraded-around-for-selfies” enhancement, so as to trouble the offender’s eternal soul as well as their life, then just.. say that. “They’re ’bad guys’ and we as a company believe that’s what bad guys deserve.” Or even, “we weren’t involved in the circumstances of their death, but we figure if we’d had a chance to ask them they probably would be fine with it.”
As morally repugnant as I find the entire endeavor, I bet it wouldn’t even hurt ticket sales: people in the West have, in the not-so-distant past, treated hangings and beheadings as social occasions.
But like, there’s a right way to do informed consent—why not just do it and say “yeah we did it the obvious way”? Come to think of it… the ambiguity sure is a reliable path to free attention. It wouldn’t be the first marketing strategy to rely on provocation…