Arson is when you intentionally set fire to any structure or building. So no, it doesn't matter if you did it out of anger or not. If you did it on purpose it's arson.Another View: Arson is defined...
Arson happens everywhere. It can happen in any structure building, car, or outside. Arson is done on purpose. Arson is not accident.
Arson where you endanger someones life!
fire
intentoily destorying property with the aid of fire