Defenses Flashcards
(92 cards)
Types of Defenses
- Procedural Defenses
- Failure of Proof Defenses
- Offense Modification Defenses
- Justification Defenses
- Excuse Defenses
Procedual Defenses
These defenses bar a defendant’s conviction, or even her prosecution, for public policy reasons that fall outside of substantive criminal law doctrine.
In these sistuations, the socialital interest served by the defense outweighs the rationales for punishing the offender.
Ex.
- Statutes of limitations
- Competence to stand trial
- Diplomatic, executive, judicial and legislative immunities
Failure of Proof Defenses
A failure-of-proof defense is one in which the defendant introduces evidence at his trial that demonstrates that the prosecution has failed to prove an essential element of the offense charged.
The defendant is raising a reasonable doubt about elements of crimes that the prosecutor has the burdon of proving
Failure of Proof Defenses
Examples
Negation of Actus Rea
- Alibi
- Non-volitiobal conduct
- No duty to act
Negation of Mens Rea
- Accident
- Mental illness or intoxication
- Mistake of fact or law
Offense Modification Defenses
Some defenses apply only apply to one crime or a set of crimes.
A common feature of these defenses is when the underlying purpose for criminalizing the conduct is negated by the condictions that constitute the defense, acquittal of the defendant is permitted even though her conduct technically satisfies the elements of the crime.
Examples
- Inchoate crimes - renunciation
- Attempt - legal impossibility
- Group criminality - abandonment
Justification Defenses
A justfication defense is one where the conduct, although meeting the elements of the crime, is deemed socially acceptable and not deserving of criminal liability.
Examples
- Necessity
- Self defense
- Defense of others
- Defrense of propery
Justification Defenses
Common Structure
- There is a subjective and objective reasonal belief
- There is a triggering condiction
- There is a necessity of response
- There is a proportionality to the response
Excuse Defenses
An excuse defense is one where the defendant is deemed to be not morally culpable even though she engaged in wrongful conduct that met the elements of the crime because her mental functioning was affected in a manner that makes her not blameworthy.
Examples
- Duress
- Insanity
- Intoxication
Excuse Defenses and Failure-of-Proof Defenses
There is potential overlap between excuse defenses and failure-of-proof defenses.
In addition to (or instead of) raising an excuse defense, a defendant might be able to claim that her mental functioning was affected to such a degree that it negates either the mens rea or the actus reus.
Excuse Defenses and Failure-of-Proof Defenses
Examples
If the defendant’s conduct was caused by mental illness, she might be able to claim that she lacked the mens rea for a specific defense crime as well as claiming an insanity defense.
If someone spiked the defendant’s drink and then hit someone in a drunken super, she might be able to claim she lacked the actus reus of a crime because her act was not volitional as well as asserting an intoxication defense.
The deficiency of mental functioning must be much more severe for an actus reus or mens rea claim than the excuse defense.
Mistake of Fact
Common Law
Specific Intent Crimes
Mistake of fact eliminates culpability where the mistake negates the additional intent/purpose beyond the intentional act
It must negate the specific intent
Mistake of Fact
Common Law
General Intent Crimes
Mistake of fact is a defense to general intent crimes only if the mistake is reasonable. It negates the mens rea towards an attendent curcumstance.
Some jurisdictions also require the conduct is not legally wrong if the circumstances had been as the defendant believed.
Other jurisdictions also require that the conduct us not morally wrong if the circumstances had been as the defendant believed.
Mistake of Fact
Common Law
Strict Liability Crimes
There was no strict liability at the common law, but some jurisdictions that use the common law have adopted strict liabillity. In those jurisdictions, mistake of fact is not a defense.
Mistake of Fact
MPC
Any mistake of fact - reasonable or unreasonable - is a defense if it negates the mens rea required to establish a material element of the offense.
However, if the defendant’s conduct would have been wrong if the circumstances had beed as the defendant thought, then the defendant will be liable for that lessor defense.
Mistake of Law
Common Law
Specific Intent Crimes
Mistake of law is generally not a defense.
Exceptions
- negation of specific intent
- reasonable reliance on an official statement of law later determined to be erroneous given by a public person or body with the responsibility for interpreting or enforcing the law
Mistake of Law
Common Law
General Intent Crimes
Mistake of law is generally not a defense.
Exception
- reasonable reliance on an official statement of law later determined to be erroneous given by a public person or body with the responsibility for interpreting or enforcing the law
Mistake of Law
Common Law
Strict Liability Crimes
There was no strict liability at the common law, but some jurisdictions that use the common law have adopted strict liabillity. In those jurisdictions, mistake of law is a defense only with reasonable reliance on an official statement of law later determined to be erroneous given by a public person or body with the responsibility for interpreting or enforcing the law.
Also, mistake of law may be a defense in cases where the nature of the conduct is not of such a nature as to put the defendant on notice that there may be a duty to act.
Justification Defenses
Self Defense
Use of Deadly Force
Common Law
A person who is not the aggressor is justified in using deadly force upon another if she reasonably believes that such force is necessary to protect herself from the imminent and unlawful use of deadly force by that other person.
Justification Defenses
Self Defense
Use of Deadly Force
Common Law Elements
- Reasonable belief
- Reasonable belief (objective and subjective)**
- Triggering condiction
- Unlawful
- (Threat or actual) use of deadly force
- By the aggressor**
- Necessity of response
- Use of force is necessary**
- To prevent imminent harm**
- Proportionality of response
- Response of deadly force only if the aggressor threatens or actually uses deadly force
Justification Defenses
Self Defense
Use of Deadly Force
Common Law Elements
- Reasonable belief
- Reasonable belief (objective and subjective)
- Triggering condiction
- Unlawful
- (Threat or actual) use of deadly force
- By the aggressor
- Necessity of response
- Use of force is necessary
- To prevent imminent harm
- Proportionality of response
- Response of deadly force only if the aggressor threatens or actually uses deadly force
Justification Defenses
Self Defense
Use of Deadly Force
Common Law Elements
Reasonable Belief
The person claiming self defense must have a reasonable belief that she faced deadly force, and it was necessary for her to respond, and that her response was proportionate
Reasonable belief has both subjective and objective components:
- The defendant must have these beliefs and
- A reasonable person would have had these beliefs
Justification Defenses
Self Defense
Use of Deadly Force
MPC Elements
Reasonable Belief
The MPC has a purely subjective approach. The person claiming self defense must believe she faces dead, serious bodily harm, kidnapping or sexual intercourse compelled by force or threat and that it’s immidiately neccessary for her to respond.
However, if the defendant was reckless or negligent in judging the necessity for his conduct, he can’t use self defense for any offense for which recklessness or negligence suffices to establish culpability.
Justification Defenses
Self Defense
Use of Deadly Force
Common Law Elements
Unlawful
If a defendant was being unlawfully arrested - being arrested without probable cause - she could claim self defense if she used non-deadly force to resist arrest.
If excessive force was being used by the arresting officer, a defendant could claim self defense if she used reasonable force to resist arrest, including deadly force if her life reasonably appeared to be in jeopardy.
Justification Defenses
Self Defense
Use of Deadly Force
MPC Elements
Unlawful
If a defendant was unlawfully arrested - arrested without probable cause - she does not have the right to use force to resist arrest.
If excessive force is used to unlawfullly arrest the defendant, she can claim self defense only if she uses non-deadly force to resist arrest