After rewatching the video a couple times now, I really don't understand why it was necessary to shoot the robber.
When you work at a business/store, it's common knowledge and standard procedure that you give a robber whatever they ask and once they leave the establishment, you contact the authorities.
In the video, the girl did the right thing by going into the cash register to give him the money. Once he left, she would've contacted her manager and the authorities, and they could've dealt with the situation afterwards.
I'm not defending the robber's actions because he is dumb af but he really didn't need to lose his life over this smh. This is just further proof Americans don't need guns and they have a major gun problem that needs fixing asap.