As Krishnamurti points out, any protection of dogma, country etc. is itself indicates anger. To me, it means that anger begins in very subtle ways and at some point becomes gross enough that it to comes into our awareness. When it comes into awareness depends on our sensitivity. I find that being sensitive helps a great deal in understanding emotions, including anger. More sensitive we are, the earlier we can catch ourselves. And that's brings up the question of what is the soil in which sensitivity springs and whether one can cultivate that soil.