This story is a bit tough to take.
Edward Corliss was convicted of killing a store clerk in 1971. In 2009, he was out of prison on parole, when he killed another store clerk. This time there was video.
Store surveillance of the robbery played at the trial showed Dangol complying with Corliss’ demands, placing all of his cash register’s money into a backpack Corliss provided. The video then shows Dangol stepping back with his hands above his head and Corliss shooting him once in the chest.The clerk cooperated with everything he was asked to do. He still ended up dead, because this guy didn't want a live witness getting to him. Cooperation with criminals is a strategy, not a guarantee. (And to my way of thinking, not a very good strategy.)