Criminal Procedure Flashcards
What rules come from the fourth amendment?
- Protection against unreasonable search and seizure
- The Warrant Requirement which mandates probable cause
- Subsequently, exceptions to the warrant requirement
Does the fourth amendment apply to all interactions with people?
No, it does not apply to all interactions between people, or even between a person and the government
- the 4th amendment only limits government authority. If a private person violates your privacy and turns over evidence to the police, then you have no claim under the 4th
- If that person is asked by police to do this however, they become a government agent for this purpose
What does the fourth amendment protect against?
searches and seizures
What is the Katz Test?
- The Fourth Amendment Protects Individuals where:
- They display a subjective expectation of privacy
- That society is prepared to recognize as reasonable
What did Katz v United States do?
Katz apparently left behind the long standing property centric analysis for the Fourth Amendment, and expanded substantially the types of protections people were afforded against government intrusion.
What is a reasonable expectation of privacy in relation to technology?
- When police use technology “not in general public use” to gain information that would have been otherwise unknowable, this constitutes a search that typically requires a warrant
- Ex: Police may use a flashlight to search a stopped car, but can’t use thermal imaging to read the heat inside a house (Kyllo v. United States).
What is a reasonable expectation of privacy in relation to location?
- Less privacy expected in commercial buildings than private dwellings
- Overnight guests in another’s home have a reasonable expectation of privacy therein (Minnesota v Olson, 1990)
- But short term guests/commercial visitors do not (Minnesota v. Carter, 1998)
What is a reasonable expectation of privacy in relation to intrusiveness?
The more the police intrude in a space, or the more thoroughly they look, the more likely it is to qualify as a search that needs a warrant
What does standard of proof mean?
the level of certainty that is needed for the government to take action.
What are some standards of proof?
- 100% Certainty
- Beyond a Reasonable Doubt
- Preponderance of The Evidence
- Probable Cause
- Reasonable Suspicion
- Guessing
What is the “Beyond a Reasonable Doubt” standard of proof?
- the most well known is beyond a reasonable doubt (BRD) which is the standard of proof required for criminal conviction.
- Although there is not a strict definition of what this means, it has been characterized as “near certainty”
What is the “Preponderance of The Evidence” standard of proof?
Preponderance of The Evidence means “more likely than not” and is used to determine outcomes in civil trials.
What is the “Reasonable suspicion” standard of proof?
Reasonable suspicion is on the low end, and require more than a “hunch” but instead some articulable basis of suspicion based on facts and reasonable inferences. RS is needed for police to conduct frisks and stops
What is Probable Cause?
- Probable Cause is required both for warrants, and for searches without warrants
- It is something less than a preponderance of evidence, but more than mere suspicion
- Probable cause means that based on “trustworthy facts”, the officers experience, and reasonable inferences, a “person of reasonable caution” would be justified in believing that is probable
- that a structure contains evidence of a crime, that a suspect committed a crime, or whatever else happens to be relevant
What can probable cause be supported by?
Probable cause can be supported by evidence that is normally inadmissible, including hearsay.
- Probable cause may be established via an informant or tipster (a citizen who provides information to the police), IF
- A judge decides based on the totality of the circumstances that there is a fair probability that contraband or evidence of a crime will be found in a particular place. (Illinois v Gates)
- Important factors include the basis of knowledge of the tipster, and the veracity of the tipster (past history of truthful behavior, or corroboration)
- Another key factor is to look for predictive information – something more than a description of the suspect, including usually something externally verifiable (the time of a meeting, for example) Florida v. JL
- Dog searches can also establish PC