Trial of Jam Master Jay's Alleged Killers Begins

Witnesses testify about the events leading up to and the night of the 2002 murder of the Run-DMC DJ.

Jam Master Jay was celebrating 50 Cent's record deal the day before his murder.
The DJ's cousin testified that Jay had started carrying a gun for protection days before his death.
Witnesses recall the night of the murder, including hearing gunshots and seeing Jay's body.
Prosecutors allege the murder was motivated by a drug deal gone wrong.
The trial, expected to last four weeks, resumes Monday.