Explain how 'actus reus' and 'mens rea' must concur to establish criminal liability, and provide an example where the lack of concurrence would negate culpability.

To establish criminal liability, the prosecution must generally prove two essential elements: 'actus reus' and 'mens rea'. 'Actus reus' refers to the guilty act, or the physical component of the crime. It is the act or omission that constitutes the illegal conduct. 'Mens rea' refers to the guilty mind, or the mental state of the defendant at the time of the act. It is the intent or knowledge that is required for the crime. For criminal liability to exist, the 'actus reus'....