See the trailer for Mumia movie

Billy Cook, Abu-Jamal's brother.

Tigre Hill, who's been working seemingly forever on a documentary about Police Officer Daniel Faulkner's slaying and the conviction of Mumia Abu-Jamal, has released a trailer.

He's hoping to screen "The Barrel of a Gun" to coincide with the 28th anniversary of Faulkner's slaying in December.

In an interview at the outset of the project, Hill intimated that the documentary would not be pro-Mumia. The trailer's opening frame of Ed Asner, an unabashed Mumia supporter, may be misleading.

Hill's last project was "The Shame of a City," about the 2003 mayoral election.