Depends on the situation. Most things I keep calm and carry on about, but if I see someone hurting another person or an animal, calm is gone and I will defend that person or animal.
Would you rather keep calm and carry on or screw calm and get angry?
I born in Jan, which means winter, winter people are oldies! Old souls! Peaceful and orators! But my blood type is A+ which it contains behavior of half calm and half crazy!!!! I'm + means i'm closer to blood type O, O people are riot with wild attitude, like Hitler.
Beside that is dependable on situations, generally, I'm calm, calm, calm, so calm! I get bothered, i warn, i'm still calm, if i break, i'll be so out of control in a very strange way.
Being calm and / or being angry can both be appropriate reactions at any given time.
Either can be an emotional response, a philosophical position, or a tool.
I carry both in my pocket for ready access. I've gotten pretty good at using the best one for a current situation.
Calm or angry? Push a button and see what happens.