People v. Knoller
Citation: 41 Cal.4th 139 (2007)
Facts
Marjorie Knoller owned two large Presa Canario dogs known to be dangerous. Despite warnings, she allowed them to roam in her apartment building, and they mauled and killed a neighbor. Knoller was convicted of second-degree murder.
Issue
What is the mental state required for implied malice second-degree murder in California? Must the defendant know that her conduct is likely to cause death, or is it enough that a reasonable person would have known?
Holding
Implied malice requires that the defendant actually knew her conduct endangered the life of another and consciously disregarded that risk. It is not enough that a reasonable person would have known — the standard is subjective, not objective.
Rule
Implied malice — second-degree murder (California): Implied malice exists when: (1) the defendant intentionally commits an act; (2) the natural consequences of the act are dangerous to human life; (3) at the time of the act, the defendant knew their conduct endangered someone’s life; and (4) the defendant acted with conscious disregard for human life. The knowledge element is subjective.
Significance
- Clarified the subjective knowledge requirement for implied malice murder in California
- Rejected a purely objective (“reasonable person”) standard for second-degree murder
- The “conscious disregard” formulation: knowing of the risk and choosing to act anyway
- Distinguished from gross negligence (which uses an objective standard) — implied malice requires actual subjective awareness