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- MD: Hot pursuit can be days later, here exigent CSLI to find him
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- CA4: That ptf charged with witness intimidation didn’t do it again wasn’t material for Franks
- CO: Not 4A or state constitutional violation for govt to access def’s computer via peer-to-peer sharing with BitTorrent software
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ABA Journal Web 100, Best Law Blogs (2015-17) (then discontinued)
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by John Wesley Hall
Criminal Defense Lawyer and
Search and seizure law consultant
Little Rock, Arkansas
Contact: forhall @ aol.com
Search and Seizure (6th ed. 2025)
www.johnwesleyhall.com -
© 2003-26,
online since Feb. 24, 2003 Approx. 600,000 visits (non-robot) since 2012 Approx. 50,000 posts since 2003 (29,000 on WordPress as of 12/31/25) -
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Fourth Amendment cases, citations, and links -
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FBI Domestic Investigations and Operations Guide (2008) (pdf)
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Stringrays (ACLU No. Cal.) (pdf)
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Congressional Research Service:
--Electronic Communications Privacy Act (2012)
--Overview of the Electronic Communications Privacy Act (2012)
--Outline of Federal Statutes Governing Wiretapping and Electronic Eavesdropping (2012)
--Federal Statutes Governing Wiretapping and Electronic Eavesdropping (2012)
--Federal Laws Relating to Cybersecurity: Discussion of Proposed Revisions (2012)
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"If it was easy, everybody would be doing it. It isn't, and they don't."
—Me -
"Life is not a matter of holding good cards, but of playing a poor hand well."
–Josh Billings (pseudonym of Henry Wheeler Shaw), Josh Billings on Ice, and Other Things (1868) (erroneously attributed to Robert Louis Stevenson, among others) -
“I am still learning.”
—Domenico Giuntalodi (but misattributed to Michelangelo Buonarroti (common phrase throughout 1500's)). -
"Love work; hate mastery over others; and avoid intimacy with the government."
—Shemaya, in the Thalmud -
"It is a pleasant world we live in, sir, a very pleasant world. There are bad people in it, Mr. Richard, but if there were no bad people, there would be no good lawyers."
—Charles Dickens, “The Old Curiosity Shop ... With a Frontispiece. From a Painting by Geo. Cattermole, Etc.” 255 (1848) -
"A system of law that not only makes certain conduct criminal, but also lays down rules for the conduct of the authorities, often becomes complex in its application to individual cases, and will from time to time produce imperfect results, especially if one's attention is confined to the particular case at bar. Some criminals do go free because of the necessity of keeping government and its servants in their place. That is one of the costs of having and enforcing a Bill of Rights. This country is built on the assumption that the cost is worth paying, and that in the long run we are all both freer and safer if the Constitution is strictly enforced."
—Williams v. Nix, 700 F. 2d 1164, 1173 (8th Cir. 1983) (Richard Sheppard Arnold, J.), rev'd Nix v. Williams, 467 US. 431 (1984). -
"The criminal goes free, if he must, but it is the law that sets him free. Nothing can destroy a government more quickly than its failure to observe its own laws, or worse, its disregard of the charter of its own existence."
—Mapp v. Ohio, 367 U.S. 643, 659 (1961). -
"Any costs the exclusionary rule are costs imposed directly by the Fourth Amendment."
—Yale Kamisar, 86 Mich.L.Rev. 1, 36 n. 151 (1987). -
"There have been powerful hydraulic pressures throughout our history that bear heavily on the Court to water down constitutional guarantees and give the police the upper hand. That hydraulic pressure has probably never been greater than it is today."
— Terry v. Ohio, 392 U.S. 1, 39 (1968) (Douglas, J., dissenting). -
"The great end, for which men entered into society, was to secure their property."
—Entick v. Carrington, 19 How.St.Tr. 1029, 1066, 95 Eng. Rep. 807 (C.P. 1765) -
"It is a fair summary of history to say that the safeguards of liberty have frequently been forged in controversies involving not very nice people. And so, while we are concerned here with a shabby defrauder, we must deal with his case in the context of what are really the great themes expressed by the Fourth Amendment."
—United States v. Rabinowitz, 339 U.S. 56, 69 (1950) (Frankfurter, J., dissenting) -
"The course of true law pertaining to searches and seizures, as enunciated here, has not–to put it mildly–run smooth."
—Chapman v. United States, 365 U.S. 610, 618 (1961) (Frankfurter, J., concurring). -
"A search is a search, even if it happens to disclose nothing but the bottom of a turntable."
—Arizona v. Hicks, 480 U.S. 321, 325 (1987) -
"For the Fourth Amendment protects people, not places. What a person knowingly exposes to the public, even in his own home or office, is not a subject of Fourth Amendment protection. ... But what he seeks to preserve as private, even in an area accessible to the public, may be constitutionally protected."
—Katz v. United States, 389 U.S. 347, 351 (1967) -
“Experience should teach us to be most on guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded
rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.”
—United States v. Olmstead, 277 U.S. 438, 479 (1925) (Brandeis, J., dissenting)
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“Liberty—the freedom from unwarranted intrusion by government—is as easily lost through insistent nibbles by government officials who seek to do their jobs too well as by those whose purpose it is to oppress; the piranha can be as deadly as the shark.”
—United States v. $124,570, 873 F.2d 1240, 1246 (9th Cir. 1989) -
"You can't always get what you want / But if you try sometimes / You just might find / You get what you need."
—Mick Jagger & Keith Richards, Let it Bleed (album, 1969) -
"In Germany, they first came for the communists,
and I didn't speak up because I wasn't a communist. Then they came for the Jews,
and I didn't speak up because I wasn't a Jew. Then they came for the trade unionists,
and I didn't speak up because I wasn't a trade unionist. Then they came for
the Catholics and I didn't speak up because I wasn't a Catholic. Then they came
for me–and by that time there was nobody left to speak up."
—Martin Niemöller (1945) [he served seven years in a concentration camp] -
“Children grow up thinking the adult world is ordered, rational, fit for purpose. It’s crap. Becoming a man is realising that it’s all rotten. Realising how to celebrate that rottenness, that’s freedom.”
– John le Carré, The Night Manager (1993), line by Richard Roper -
"The point of the Fourth Amendment, which often is not grasped by zealous officers, is not that it denies law enforcement the support of the usual inferences which reasonable men draw from evidence. Its protection consists in requiring that those inferences be drawn by a neutral and detached magistrate instead of being judged by the officer engaged in the often competitive enterprise of ferreting out crime."
—Johnson v. United States, 333 U.S. 10, 13-14 (1948) -
The book was dedicated in the first (1982) and sixth (2025) editions to Justin William Hall (1975-2025). He was three when this project started in 1978.
Website design by Wally Waller, Colorado Springs.
Category Archives: Collective knowledge
D.N.J.: Inevitable discovery applied: (1) officers were drafting affidavit for warrant and (2) there was overwhelming PC
The government proved inevitable discovery applied because (1) they had already started drafting the warrant when the allegedly illegal search occurred and (2) there was overwhelming probable cause for the search. United States v. Restitullo, 2016 U.S. Dist. LEXIS 144269 … Continue reading
ND: When suspect lives in house and drug paraphernalia out, it’s not “mere presence” for his detention
When drug paraphernalia is present and in plain view, detaining all present is not a detention for “mere presence.” Moreover, defendant stayed there. State v. Schmidt, 2016 ND 187, 2016 N.D. LEXIS 177 (Sept. 15, 2016). Defendant’s stop on Ft. … Continue reading
IA: LEO had PC to arrest for parole violation when PO related violations and requested arrest
A police officer encountered defendant at a trailer park and found out he was on parole. Defendant gave his PO’s name, and the officer called. The PO said that defendant has missed meetings and failed a drug test and they … Continue reading
VI: The court declines to adopt horizontal collective knowledge
The court declines to adopt horizontal collective knowledge since the V.I. Supreme Court has never addressed it. [It’s rationale, however, is likely at odds with Utah v. Strieff which likely was never briefed.] People v. Looby, 2016 V.I. LEXIS 114 … Continue reading
VA adopts collective knowledge doctrine
Virginia finally adopts the collective knowledge doctrine. (Somehow it hadn’t had to before.) Edmond v. Commonwealth, 2016 Va. App. LEXIS 212 (Aug. 2, 2016):
E.D.Ky.: Collective knowledge doesn’t require any one of them to know everything they collectively know
There was reasonable suspicion for the stop, which the defense didn’t seriously contest. What they did contest was collective knowledge, and that doctrine does not require that each officer know what the others know. United States v. Johnson, 2016 U.S. … Continue reading
D.Minn.: Collective knowledge doctrine applies to RS under Rodriguez
The collective knowledge doctrine supports the extension of defendant’s stop beyond the normal part of a traffic stop incident to its purpose under Rodriguez. The DEA had additional information that added up to reasonable suspicion, almost probable cause. United States … Continue reading
MA: Collective knowledge of nothing is still nothing, despite stopping officer’s good faith
Collective knowledge here was not reasonable suspicion. Defendant’s vehicle was reportedly involved in a shooting and stopped based on a radio report from Boston PD to another department. Defendant, however, had left the scene of the shooting ten minutes before … Continue reading
OH5: Not unreasonable to deny passenger permission to retrieve purse before dog sniff of car
The smell of burning marijuana was probable cause for a car search. The officer’s refusal to let the passenger retrieve her purse from the car before the search did not violate the Fourth Amendment. State v. Eiler, 2016-Ohio-224, 2016 Ohio … Continue reading
CO: Collective knowledge doctrine applies to plain view seizure of laptop computer
The fellow officer (collective knowledge) rule applies to plain view seizure of a laptop computer that was seen in plain view that the fellow officer had probable cause to believe contained child pornography. People v. Swietlicki, 2015 CO 67, 2015 … Continue reading
TX4: Fact that PC was via collective knowledge but not all details how was not Franks violation
It was apparent that the person whose information ended up in the search warrant application was a citizen informant not subject to a more intense review for probable cause. The fact that the affiant didn’t personally talk to the informant … Continue reading
CO declines to give greater state const’l rights to closed container
Defendant was stopped for fictitious tags, and he had a revoked DL and no insurance, too. An inventory of the vehicle was conducted, and a closed cooler was searched. Conceding the search valid under the Fourth Amendment, he argued that … Continue reading
E.D.N.C.: Collective knowledge doctrine applies between FBI and state officers
“The collective knowledge doctrine, however, is not limited to cases where a superior officer commands another officer. Rather, the doctrine properly may be applied in cases where information is relayed between different law enforcement departments, even when the agency possessing … Continue reading
DE: When collective knowledge is used, the first with PC or RS must be called at suppression hearing; hearsay not admissible
When the state relies on the collective knowledge doctrine, it is required to call the officers involved in both ends of it. Merely having the searching officer testify to hearsay as to what the first officer did is inadequate, even … Continue reading