Ex-Black Panther Mumia Abu-Jamal sentenced to death for killing Philadelphia police officer . The judge said he was "guilty of a crime that is as serious and heinous as any I have ever seen in my judicial career" He will be executed on November 21 at the state prison Appeals court can now impose death sentence or order new trial to hear claims of injustice . `` He is nothing short of an assassin . '' former Philadelphia district attorney says .
Ex-Black Panther Mumia Abu-Jamal sentenced to death for killing Philadelphia police officer . He says there were procedural errors during his sentencing , too few blacks on the jury . Appeals court can now impose death sentence or order new trial to hear claims of injustice . `` He is nothing short of an assassin . '' former Philadelphia district attorney says .