Chief Keef is a teenage American rapper from 'O Block', a very rough neighborhood in Chicago's slums.
He's released one album and a couple mixtapes. He makes trap music.
He's 17 years old and his crew, Glory Boyz Entertainment (GBE) are around that age as well. Chief Keef is basically the embodiment of attitude, and all that's wrong with modern rap music.
And he is awesome. Seriously. Everyone in Chicago, white, black, impoverished and wealthy, loves his music, myself included. He and GBE are basically the new OFWGKTA around here except they don't rap about pretend fantasy murder binges, rather about making money and generally being all-around gangstas.
So gangsta, in fact, that apparently one rapper who talked smack to Keef and his crew got shot and killed later. And then so did his best friend. After learning about the rapper's death, Keef made some inflammatory comments on Twitter and arose the suspicion of police that he may have been involved with it.
Recently he got indicted for violating his parole. His parole had to do with an earlier judge ruling that he couldn't be near guns, because he aimed a gun at a police officer when he was 16.