I think that anger is the result of frustration also.... many factors leading into it, but it does need an outlet.Should it be controlled.... yes I also think that verbally expressing anger is a needed emotional outlet for those who can't go to a gym and punch a bag or beat a padded wall. HOw many of us would explode if we were angry about something and couldn't voice that anger to someone? We teach our children to tell us when they are upset about something, so we can try to help them work thru that problem, and teach them how to deal with that feeling. And as adults... we need to work thru anger just the same. Some peoples view of control is a lot different than others. and some just keep it in until it festers and destroys them from the inside out. Good outlets....taking yourself away from the source of anger.... talking to others about it, music, reading, , exersize, meditating (prayer), classes on anger management. or maybe just a mental visit to the beach.... sittling on the sand watching the waves come in.... finding that peace you are missing in your life.... Replacing the anger with a little more tranquility.