This is a serious warning of extreme caution! If you're sensitive at all then I 100% suggest not looking at it unless you've been completely dehumanized and desensitized to violence (like me). It's not so much the video itself but the audio is very disturbing.

Brannan [the assailant] systematically, methodically shot Dinkheller in the arms, legs, exposed areas that would not be covered had Dinkheller been wearing a bulletproof vest, slowly executing him. Reloading his weapon Brannan continued firing with the final death shot to Dinkheller's right eye.

Video here

There is so many things wrong with his procedure it completely goes against today's Officer & public safety protocols.