SAN DIEGO — San Diego’s police oversight commission issued a memo last week raising concerns about “a consistent increase” in the number of officers failing to activate their body-worn cameras. “Over the last year or so, we have observed multiple officers, across all divisions, who have failed to activate their (body-worn cameras) as required per procedure,” Commission on Police Practices Chair Brandon Hilpert wrote in the memo, which was sent to San Diego police Chief David Nisleit on Thursday. The commission reviews investigations by the Police Department into complaints against officers. The commission replaced the Community Review Board on Police Practices after voters approved Measure B last November. A proposal that is expected to give investigative powers to the commission is in the works.