When a person uses threats of force to demand money or property unlawfully, this crime is referred to as:

The term that accurately describes the act of using threats of force to unlawfully demand money or property is blackmail. Blackmail involves coercing someone into giving up money or property by threatening harm or revealing embarrassing information. This form of extortion clearly implies a direct threat that instills fear and compels the victim to comply with the demands of the perpetrator.

In contrast, criminal defamation pertains to false statements that damage someone's reputation, which is not related to the unlawful collection of money or property. Bribery involves offering something of value to influence someone's behavior or decisions, typically in a corrupt manner, rather than threats. Misprision of a felony refers to the deliberate concealment of a felony, which does not involve the direct demands for money or property through threats.