When can the police use deadly force?

"Use of deadly force" is often granted to police forces when the person or persons in question are believed to be an immediate danger to people around them. For example, an armed man in a shopping mall shooting at random without regard to the safety of the people around him, and refusing or being unwilling to negotiate, would likely warrant usage of deadly force, as a means to prevent further danger to the community. In the United States this is governed by Tennessee v. Garner, which said that "deadly force...may not be used unless necessary to prevent the escape and the officer has probable cause to believe that the suspect poses a significant threat of death or serious physical injury to the officer or others." In Australia, it has recently been proposed that Police officers should have this power when a person might in the future pose a threat to others (Australian Anti-Terrorism Bill 2005).