Executions also have symbolic value and all sorts of people have been buried with metal who were not human sacrifices. > Prisoners are just worthless people th

Executions also have symbolic value and all sorts of people have been buried with metal who were not human sacrifices. > Prisoners are just worthless people that you want to get rid of. That's not always true. Sometimes prisoners are important people you want to set an example of. These aren't the first ancient skeletons with iron shackles archeologists have found and the other ones (China, Rome, etc.) certainly aren't all human sacrifices.