Manslaughter is a legal term for the killing of a human being but is a lesser offense compared to murder. It is broken down into voluntary and involuntary. Voluntary manslaughter happens when there is provocation, imperfect self-defense and diminished capacity. While involuntary manslaughter is distinguished from voluntary manslaughter by the absence of intention. It is divided into constructive and criminally negligent manslaughter. Mostly, cases like this are settled through plea arrangement because if you truly analyze the case it is not winnable so better work something out so client can continue to live his life in an unscathed fashion. This is according to criminal defense attorneys in Southern California.