Gabriel had thought that the world didn't know magic. However, that's where he made a mistake. Even though rare, this world also had something called the Wizards. However, the wizards were something that were considered taboo.
The government had banned all magic, and all the wizards who were discovered, were to be shot down, along with their allies.
Most people didn't even know about the wizards in this world since they were so rare, and the government kept their existence a secret from most ordinary people, killing one whenever one was discovered.
In fact, most of the time, only a small accusation was enough and people were killed without any investigation. That's how scared people were of Wizards, especially the government.
According to them, it was better to kill a thousand innocent humans than to let a Wizard escape!