A traumatic experience, real or imagined, creates agony and tension. Views problem as unsolvable. Projects all responsibility onto someone or something else. Turns inward, becomes egocentric and self-protective. Views a violent act as the only way out.
Violent act is attempted or committed.
It was noted that not all violent outbursts follow this progression. A violent outcome is more likely to be avoided if the problem is dealt with sooner rather than later. Lots of variables can come into play prior to a violent act that can put innocent people at risk. Always listen to your intuition when dealing with people. If you feel threatened then take action.