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I've heard in a few places that you shouldn't make public pieces of evidence that you plan to use later to support a case against some person/entity.

But I'd like to ask if this is actually true and what is it based on.

Does it make your evidence invalid? Is it more like strategic advice?

Thanks.

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  • In what jurisdiction?
    – bdb484
    Jan 2, 2022 at 23:57

2 Answers 2

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Yes, one should not publish evidence until a verdict is reached. This includes any possible appeals.

In common law, doing so has long been one of the contempt of court offences called sub judice, or "publishing information that interferes with a fair trial". The main point is that the jury should not be influenced by any information other than what they hear in the courtroom.

In New Zealand, the offence was recently codified.

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  • Thank you, it makes sense under that light. What about evidence that was published before the trial even started? Ex. some guy robs you and you have that on video, you put that on facebook at some point, a few months down the road you decide to sue ... ? Jan 3, 2022 at 4:32
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    @almosnow I'm not an expert but I would expect that the video must be removed until the case is closed: by keeping it you still do interfere with a fair trial; by removing it you do your best to lessen the interference.
    – Greendrake
    Jan 3, 2022 at 5:09
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In the U.S., this is largely a matter of professional ethics applicable to attorneys. It is calculated to prevent a party from publicly disclosing evidence that would otherwise be inadmissible at trial in order to make it known to potential jurors who may decline to disclose that they have this information and could rule based upon it.

Every U.S. jurisdiction has ethical rules for attorneys that use the numbering system of the ABA Model Rules of Professional Conduct, and while they are not identical in every jurisdiction, the Model Rules are the foundation from which modifications are added by individual jurisdictions that wish to have a different substantive rule. This situation is governed by Model Rule of Professional Conduct 3.6 which states:

Rule 3.6: Trial Publicity

(a) A lawyer who is participating or has participated in the investigation or litigation of a matter shall not make an extrajudicial statement that the lawyer knows or reasonably should know will be disseminated by means of public communication and will have a substantial likelihood of materially prejudicing an adjudicative proceeding in the matter.

(b) Notwithstanding paragraph (a), a lawyer may state:

(1) the claim, offense or defense involved and, except when prohibited by law, the identity of the persons involved;

(2) information contained in a public record;

(3) that an investigation of a matter is in progress;

(4) the scheduling or result of any step in litigation;

(5) a request for assistance in obtaining evidence and information necessary thereto;

(6) a warning of danger concerning the behavior of a person involved, when there is reason to believe that there exists the likelihood of substantial harm to an individual or to the public interest; and

(7) in a criminal case, in addition to subparagraphs (1) through (6):

(i) the identity, residence, occupation and family status of the accused;

(ii) if the accused has not been apprehended, information necessary to aid in apprehension of that person;

(iii) the fact, time and place of arrest; and

(iv) the identity of investigating and arresting officers or agencies and the length of the investigation.

(c) Notwithstanding paragraph (a), a lawyer may make a statement that a reasonable lawyer would believe is required to protect a client from the substantial undue prejudicial effect of recent publicity not initiated by the lawyer or the lawyer's client. A statement made pursuant to this paragraph shall be limited to such information as is necessary to mitigate the recent adverse publicity.

(d) No lawyer associated in a firm or government agency with a lawyer subject to paragraph (a) shall make a statement prohibited by paragraph (a).

In an extreme case, juror pool access to inadmissible evidence as a result of trial publicity could lead to a mistrial or a successful change of venue, and could give rise to contempt of court sanctions against a responsible party.

There are also other reasons not to disclose evidence in advance of trial that do not implicate this ethical rule from a strategic perspective that have to be evaluated tactically on a case by case basis.

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  • If true, you might point out that an ethical rule is nothing like a law. Jan 3, 2022 at 20:47
  • @GeoergeWhite It can get the lawyers involved disbarred. This is a lot like a law.
    – ohwilleke
    Jan 4, 2022 at 1:34
  • Thanks. Googling it I see that disbarment is not just an attorney self-regulating process as I assumed but, at least in NY and CA, is tied to the State Supreme Court. I'll delete my comment later. Jan 4, 2022 at 3:01

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