Most police officers don't get murder charges anyway. Civil court exist for something. Saying that people should sue criminal instead of civil is up to the victim team not you.
If people don't want to be sued civil they should do a better job first. Removing bs laws that don't regulate anything anyway would be good also.
Laws are meant to be respected not to be dodge because your job is important. Everybody job is.
What you are saying is factually wrong. If I can sue a mall security for something. I should be able to sue a police officer for the same. The job of the defendant doesn't change the status of the charge/request. Most public servant don't work as a spy imbedded in Russia.
Your logic doesn't make any sense. You can sue for absolutely anything, but that doesn't mean a judge is willing to hear your case or that it is grounded upon any law.
If people don't want to be sued civil they should do a better job first. Removing bs laws that don't regulate anything anyway would be good also.
Laws are meant to be respected not to be dodge because your job is important. Everybody job is.