Good response to the parameters of the question.
I will limit my comments to the more general nature of the question as seen frequently in many threads.
These examples are of shop owners or employees being targeted as the victims of crime in spite of the fact they carried openly. The normal request asks how often people are targeted because they were openly carrying as opposed to concealed. "Taken out first" implies (to me) they were selected for attack first from a group to eliminate the known threat. These shop owners may have been alone, the article doesn't say.
The article should give thought to awareness, retention, etc. at a minimum.