Maybe you call it a "pet peeve" instead of being angry?
Rude people?
Selfish people?
Mean people?
Anger can be a very stressful experience that I would prefer to avoid. I've learned to set aside anger appropriately, as my anger triggers my stubborn and angry son to fight back! I can yell at him to put on his shoes, and we end up yelling at each other -- or I can help him untie the double knots.
But, I let the anger out sometimes, stomp my feet and say "I'm so angry with you for playing with Lego instead of getting ready!" Then I help him with his shoes.