There was a reason Angelo Morgan was known as the mad king, and it wasn't because he loved butterflies or ran after rabbits while petting them. Angelo had been in the supernatural world for two years and he had made a name for himself. As a human, he had been feared for being Satan but as a supernatural, he was a raging beast.
He was an anger addict and one misstep was enough for him to kill first and ask questions later.
Gaviria tried reasoning with Zayn, so did Mikhail, Camille, Darius, and even Hera. But Zayn insisted. He wanted to prove himself and what better way to show that than by wearing the golden chain on his neck. It was the only way he would be able to interact with the people of Alexei.
The golden slave chain was a symbol that the perpetrator was ready to atone for his or her sins. It also showed the people that he was linked to the mad king. And people trusted Angelo. The kingdom loved him so it wouldn't be so hard for them to stand by their king's decision.
