More black police not solution, says Cleveland's top cop

Calvin Williams, the chief of the embattled Cleveland Division of Police, doesn't believe more black police officers is the solution to broken relationships between the mostly white police departments that serve predominantly black communities. A more effective course would be increasing the informal interaction between police and citizens, says Williams.

The chief speaks in his first national interview since one of his white officers gunned down a 12-year-old African American who was holding a pellet gun, igniting a feud between police and citizens like those making news in Ferguson, Missouri, and New York, among other U.S. cities. Williams interview with Bill Whitaker will be broadcast on 60 Minutes Sunday, Jan. 25 at 7 p.m. ET/PT.

An excerpt from Sunday's 60 Minutes story will be broadcast tonight on the CBS Evening News with Scott Pelley. The text of this excerpt is below:

The rookie officer who killed Rice was hired by the Cleveland PD even though another police department had found him emotionally unfit and forced him to resign.

WHITAKER: How did he get hired by the Cleveland Police Department?

WILLIAMS: Those are things that are under investigation, that we're definitely takin' a second, a third, and a fourth look at --

WHITAKER: How did he slip through?

WILLIAMS: We know some of the things that happened in that process. And we're-- even at this moment-- changing the way some of that is done.

Prosecutors are investigating the Rice case. Protests against --- and in support of police have continued in Cleveland ever since the shooting.

WHITAKER: You've got a predominantly black city, and a majority white police force. Does that need to change?

WILLIAMS: Diversity is always at the forefront of what I'm trying to do in this city. But if you come from the premise that only an African American can police other African Americans, then we're all doomed to failure.