The Wire was written by David Simon, a Baltimore journalist who wrote Homicide: A Year on the Killing Streets (made into a TV show named Homicide before The Wir

The Wire was written by David Simon, a Baltimore journalist who wrote Homicide: A Year on the Killing Streets (made into a TV show named Homicide before The Wire) after embedding with the police for a year. It's basically the magnum opus of crime documentary from that era. The Wire is fiction but draws strongly from that work. I don't know how his experiences influenced him, but David Simon's politics are extremely left wing these days so make of that what you will.