Most people use anger as a tool to remove stress, anxiety, boredness, etc. but end up making it even worse.

Angry people |Unsplash

You recognize or not but you encounter an angry person once a day. 

Ask yourself, how many times you encounter negative vibrations in your atmosphere. A nasty environment can disturb your mind or upset you. Possibly in every business or industry, short-tempered personalities are prohibited. When you are with angry people and telling them direct words (like "calm down, stop shouting") can criticize the speaker. Among all emotions, anger has the darkest climate that can only be controlled when you react smartly.
https://www.lifesuggests.com/2020/04/how-to-deal-with-angry-people.html
Angry people|Lifesuggests

Why do we need to react smartly when someone is angry? 

Because it is important.

At the office, college, home, school, road, public transit, parks, so and so. These places are the battlegrounds where you possibly confront anyone's anger.

If you diminish someone's anger, it can create a great reputation in your professional life. 

The first thing you need to do while handling someone's rage is to,

Respond calmly

A person can only be controlled when you are in control of yourself. If a person shouts at you, respond calmly and positively. 
Example: To defuse a time bomb there are two types of wire, you have to choose the correct wire to defuse it.
Or "kaaBoom!"

Identify the cause

After calming yourself, find the reason for anger in the person you are confronting. 
Ask and let them speak, don't interrupt in between.
When they tell the reason,
  • try to empathize and provide a true solution to comfort them. 
Example: If an irritated customer came to change something she bought, it's better to identify the problem and respond genuinely (otherwise it can create angry situations).

Try to find solutions or Apologize!

Know what is right at that time, if it's your fault then there is nothing to feel shy about apologizing. If it's not then trying to find solutions can work. Ask, what can you do to make things right. 
A calm person is easy to recognize but hard to find.  
Example: One of your friends got very angry, what will you do in this situation? You ask them what happened, trying to reduce their anger and resolve the issue if possible. If it's you then apologize like a pro.

Distract them

Dealing with angry people is a kind of skillful task that shows your control over your mind. Simple trick- If you can't convince them, confuse them. Try to distract the subject if you didn't find a solution(doesn't work in organizations). Humour is used usually to change emotions 
Example: If your friend is angry(again) the best thing to do is to use humor and distract her mind.

 
Disengage, Stay safe, or involve others

Learn when to stand and when to walk. Whenever the person uses abusive words or violence it's better to seek some help or walk away. There is nothing as important as your healthiness.
For Example: In BPO organizations escalations are common, sometimes customer gets much angry to handle and so employees choose to escalate customers' issues to their seniors.



Summary: how to control someone's anger?

  • Respond calmly
  • Identify the reason
  • Try to find solutions or apologize
  • Distract them
  • Stay safe, involve others and Disengage
Anybody can get angry - that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way - that is not within everybody's power and is not easy. 
-Aristotle

Tips: Don't use words like "calm down", this can increase their rage.