Thoughts that can trigger anger include personal assessments, assumptions, evaluations, or interpretations of situations that makes people think that someone else is attempting (consciously or not) to hurt them.
Life is like a bunch of roses. Some sparkle like raindrops. Some fade when there's no sun. Some just fade away in time. Some dance in many colors. Some drop with hanging wings. Some make you fall in love. The beauty is in the eye of the beholder. Life you can be sure of, you will not get out ALIVE.(sorry about that)