NBC had a number of guidelines for what radio shows could and could not contain. This volume Broadcasting in the Public Interest, from 1939, outlines those rules. This first 'Standards and Practices' booklet soon became yet another standard throughout the industry. It was 6 by 9 inches and is 80 pages long.
Involuntary manslaughter usually refers to an unintentional killing that results from recklessness or criminal negligence, or from an unlawful act that is a misdemeanor or low-level felony (such as a DUI).
The state of mind necessary to prove first-degree murder. The prosecution must prove that the defendant intended to cause death or great bodily harm, or exhibited extreme and reckless indifference to the value of life. Any intentional killing that does not involve justification, excuse, or mitigation is a killing with malice aforethought.