New York City Police Commissioner Bill Bratton calls anger surrounding policing ‘tip of the iceberg’

Police Commissioner Bill Bratton, center, arrives at the funeral of slain New York Police Department Officer Rafael Ramos at the Christ Tabernacle Church on Saturday in the Glenwood section of the Queens borough. Ramos was shot, along with Officer Wenjian Liu, while they were sitting in their patrol car in Brooklyn on Dec. 20. (Kevin Hagen/Getty Images)

Police Commissioner Bill Bratton called frustration in New York and across the country surrounding policing the "tip of the iceberg" during an appearance Sunday on NBC's "Meet the Press."

"This isn't just about policing," he said. "There's so many national issues that have to be addressed," including income disparity.

The New York police chief also said trust issues between the black community and officers was a real problem.

"There's no denying that among the black community that there are those concerns," he said. "We have a lot of talking we're going to have to do here to understand all sides of this issue."

Bratton commended the New York Police Department for the "remarkable restraint" shown in the past several weeks during protests over police actions and said, "I think it's probably a riff that's going to go on a while longer."