When a police officer is killed in the line of duty, I would guess that cops would be pretty offended if the news media didn't cover it. What I object to is coverage of murder victims, for example, whose families deserve privacy. Recently, there was TV coverage of the funeral of three children who were murdered in their home. I didn't see video from inside the church, but still we got to see the caskets and some mourners. I would suggest that there is NO news value is such coverage.
News is the unexpected.
Yet funerals are quite normal in our society. News is something that affects your life. Funerals of people who you've never met, should not affect your life. Please understand I am drawing a big distinction between the murder of three children which IS news, and then watching people mourn their deaths. I think such funeral coverage is a sort of emotional voyeurism.