There are always those who look for any sign that they can interpret as an upcoming opportunity to shoot people.
It does seem you are quite right about that.
You have referenced a condition which has operated at highly destructive efficiency since the beginning of time. In the human example, the "sign" which most often occurs as an "opportunity" for humans to shoot (or bash, stab, slash, blast or burn) other humans is known as the
territorial imperative. And unless the dominant sub-species of humans presently being pushed to the trigger stage can manage to elect leaders who are willing and able to terminate the antagonizing encroachment by a subordinate sub-species I'm afraid we soon will witness one more spectacular event in the ongoing history of human warfare.