Five former New Orleans police officers were sentenced Wednesday to prison terms ranging from six to 65 years for their roles in deadly shootings of unarmed residents in the chaotic days after Hurricane Katrina, with the judge lashing out at prosecutors for two hours on their handling of the case. Police shot six people at the Danzinger Bridge on Sept. 4, 2005, killing two, less than a week after Katrina made landfall. To make the shootings appear justified, officers conspired to plant a gun, fabricate witnesses and falsify reports. The case became the centerpiece of the Justice Department’s push to clean up the troubled New Orleans Police Department.