Forget libel -- in some states, it potentially introduces criminal liability!
https://kfor.com/news/oklahoma-legislature/controversial-ant... [2021]
>"Governor Kevin Stitt today signed into law House Bill 1643, a bill that makes it crime to dox, or post personal information, of law enforcement and county officials online."
Sure, it's egregiously unconstitutional; but just as you say, I wouldn't want to be the one hiring attorneys.
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[late edit]: To defend of my assertion of "egregiously unconsitutional", I'll quote this succinct summary of the enumerated First Amendment exceptions in United States v. Stevens [2010], as summarized in Rynearson v. Ferguson. I can't imagine how any of these could even loosely apply here; please correct my misunderstandings if you are able. (For those Googling things, be warned that Stevens is a very disturbing case).
> Over the years, the Supreme Court has enumerated certain “well-defined and narrowly limited’ classes of speech that remain unprotected by the First Amendment. See Chaplinsky v. New Hampshire, 315 U.S. 568, 571-72 (1949). The unprotected speech is limited to, (a) obscenity, Roth v. United States, 354 U.S. 476; (b) defamation, Beauharnais v. Illinois, 343 U.S. 250, 254-255 (1952); (c) fraud, Virginia Board of Pharmacy v. Virginia Citizens Consumer Council, Inc., 425 U.S. 748 (1976); (d) incitement, Brandenbury v. Ohio, 395 U.S. 444, 447-49 (1969); (e) true threats, Watts v. United States, 394 U.S. 705 (1969); and (f) speech integral to criminal conduct, Giboney v. Expire Storate & Ice Co., 336 U.S. 490, 498 (1949). Speech that does not fall into these exceptions remains protected. See United States v. Stevens, 559 U.S. 460 (2010).
https://www.eff.org/files/2019/02/22/order_granting_pi.pdf
Here's a longer (two page PDF) summary of the same, glossing some definitions:
https://crsreports.congress.gov/product/pdf/IF/IF11072 [.pdf]