Do Police Officers deserve cussing out just because they are Police Officers? Why is it only sometimes wrong? Is it wrong to cuss out your Mom?
Police Officers are people, and like everyone else, they make mistakes as a cop, parent, spouse, brother, friend, colleague, and with strangers. They have good days and bad days.
Every situation is different, cookie cutter approaches to policing just don't work. There are times when, an alternate route is needed. Here is an example, Al Capone went to jail for tax law violations and contempt of court.
@Chauncey Gardiner mentioned cameras as though there is no accountability for Police Officers who don't wear cameras. It's simply another form of evidence. Cameras have almost removed a Police Officer's use of discretion, and that's unfortunate.