E.g. CNN threatened to broadcast a Reddit posters personal information to over 2 billion people worldwide unless he took down and apologised for a hilarious meme he (allegedly) made of president Trumpwrestling CNN WWF style, that is actually blackmail.
Person 1: "Why didn't Rachel come to work today?"
Person 2: "Haven't you heard, she got blackmaled by Ta'Quante last night."
Person 1: "One must always take care when getting blackmaled."
When the people in your life use fear, obligation, and guilt to manipulate you. It is a very powerful form of manipulation in which the person directly or indirectly threatens to punish you if you don't compile with how they want you to behave.
Some examples of things Emotional Blackmailers say are: "If you really loved me..." "After all I've done for you..." "How can you be so selfish..."