I once assessed a veteran for PTSD who had seen multiple combat tours and had seen people die in combat. He had PTSD - not from combat, but from witnessing a public execution while on leave in a nearby country. He saw it as so barbaric it was difficult to reconcile
theguardian.com
‘Medieval’ and ‘disturbing’: US plan to livestream execution elicits global condemnation
Pentagon said execution of Nidal Malik Hasan, who killed 13 people at Fort Hood in 2009, would be broadcast live