Cleveland officers' silence frustrates prosecutor in police trial

Cuyahoga County Prosecutor Timothy McGinty says he's run into a blue wall of silence.
Before Officer Michael Brelo's trial began, 16 Cleveland police officers declined to meet with prosecutors to review their testimony about the officer's shooting of Timothy Russell and Malissa Williams.
Once the case reached a courtroom, seven officers exercised their 5th Amendment rights and refused to testify about Brelo, who prosecutors say leaped onto the hood of Russell's car after a lengthy pursuit and fired 15 rounds from his pistol, killing both occupants.
READ MORE:http://www.latimes.com/nation/la-na-cleveland-police-20150517-story.html#page=1