Jumpy and trigger happy are not qualities I think make for a good police officer. But that's what so many of these smaller forces seem to get these days. The officer in this case was probably making about $18 an hour. For the Ferguson police officer it was probably less than that. You don't get the sharpest tools in the shed for money like that.
Union cop is not a job with little financial compensation.
Agreed you don’t get the sharpest tools, plus I can tell you when I was a kid I was often on the wrong side of things with LE I think from what I saw even the most patient cop would be come jaded from seeing the crap side of life they see everyday.