Mens Rea Continued: The Problem of Gross Negligence and the Code's
Classifications
 

Although the baseline mens rea is spoken of in terms of recklessness (in modern codes )  or "malice" (in common law cases), there are some crimes where there is a lower mens rea.  Lower is used in the sense that one need not have been aware that what he was doing was wrong, or that it might inflict illegal harm.  Rather, if he should have known, this suffices for liability.  This is criminal negligence
It can arise in involuntary manslaughter, and battery for example.  Now as you are learning in torts there is something called civil negligence -- one should have know that he was breaching a duty of care that could lead to injury.  Criminal negligence, however, must be more than civil negligence.  The question is, more what?
Consider Santillanes on page 209.   The defendant got in a fight with his 7 year old nephew andcut his neck with a knief.  He was convicted of child endangerment.  The trial judge had instructed the jury on civil rather than criminal negligence and the defendant appealed on the ground that the trial judge had erred.  Now note that this court states the general rule that even what a statute is silent, it is presumed to require a mens rea (why? -- think back to Martin case and Newton case).  Why don't we generally approve of no fault crimes?  Is there such an act as a crime without fault or is it a contradiction in terms?
 The Court said criminal rather than civil negligence was the mens rea when one risked the moral contempt of the community.  The court says the line is between "morally culpable" and "merely inadverent" conduct.  What criteria did the court give for deciding on which side of the line given conduct was?  Is all civil negligent conduct, "merely inadverent"?  Do we hold landlords in moral contempt who let a building become a safety hazard?  Note that the Code on page 212 attempts to give meat to the difference speaking of a "substantial" risk or a "gross deviation" from the care he should act with.  How do we know when the conduct was grossly negligent??  Is there a fixed measure?