First of all, I think the federal statutes regarding denial of civil rights (employment, in this case) and threats against people exercising their (protected) civil liberties are, by incorporation in the UCMJ, definitive regarding the nature of the "threat."
The question of using federal property and resources in doing so would have it's own controlling articles and elements.
While I used the "conduct unbecoming" terminology, I think the applicable terminology would be "
conduct of a nature to bring discredit upon the armed forces" and "
to the prejudice of good order and discipline."
Further, I think an Article 15 would be insufficient. An Article 15 has limited penalties that can be imposed. I believe a Special Court Martial is called for, if not a General, since the penalty should include a dishonorable discharge and demotion to E-1 prior to discharge. An Article 15 is limited to one pay grade and 7 days correctional custody, although flag officers have greater punitive powers under Article 15.
Remember, what we're talking about here is acting in an attempt to deprive an American citizen of his Civil Rights (employment, considered 'property') and using such an act as an attempt to intimidate that citizen in the exercise of his Constitutionally-protected civil liberties (free speech). This is 180 degrees in opposition to the oath to "protect and defend the Constitution" ... the single most
fundamental duty of the military.
To sweep this aside would be a travesty, imho.
Important caveat: IANAL! Punitive Articles of the UCMJ
Article 134 - (Threat, communicating)Text.See "Article 134—General article"
Elements.(1) That the accused communicated certain language expressing a present determination or intent to wrongfully injure the person, property, or reputation of another person, presently or in the future;
(2) That the communication was made known to that person or to a third person;
(3) That the communication was wrongful; and
(4) That, under the circumstances, the conduct of the accused was to the prejudice of good order and discipline in the armed forces or was of a nature to bring discredit upon the armed forces.
Explanation. To establish the threat it is not necessary that the accused actually intended to do the injury threatened. However, a declaration made under circumstances which reveal it to be in jest or for an innocent or legitimate purpose, or which contradict the expressed intent to commit the act, does not constitute this offense. Nor is the offense committed by the mere statement of intent to commit an unlawful act not involving injury to another. See also paragraph 109 concerning bomb threat.
Lesser included offenses.(1) Article 117—provoking speeches or gestures
(2) Article 80—attempts
Maximum punishment. Dishonorable discharge, forfeiture of all pay and allowances, and confinement for 3 years.
http://usmilitary.about.com/library/milinfo/mcm/bl134-53.htm Article 134—General article“Though not specifically mentioned in this chapter, all disorders and neglects to the prejudice of good order and discipline in the armed forces, all conduct of a nature to bring discredit upon the armed forces, and crimes and offenses not capital, of which persons subject to this chapter may be guilty, shall be taken cognizance of by a general, special, or summary court-martial, according to the nature and degree of the offense, and shall be punished at the discretion of that court.”
Elements.The proof required for conviction of an offense under Article 134 depends upon the nature of the misconduct charged. If the conduct is punished as a crime or offense not capital, the proof must establish every element of the crime or offense as required by the applicable law.
If the conduct is punished as a disorder or neglect to the prejudice of good order and discipline in the armed forces, or of a nature to bring discredit upon the armed forces, then the following proof is required:
(1) That the accused did or failed to do certain acts; and
(2) That, under the circumstances, the accused’s conduct was to the prejudice of good order and discipline in the armed forces or was of a nature to bring discredit upon the armed forces.
Explanation.(1)
In general. Article 134 makes punishable acts in three categories of offenses not specifically covered in any other article of the code. These are referred to as “clauses 1, 2, and 3” of Article 134. Clause 1 offenses involve disorders and neglects to the prejudice of good order and discipline in the armed forces. Clause 2 offenses involve conduct of a nature to bring discredit upon the armed forces. Clause 3 offenses involve noncapital crimes or offenses which violate Federal law including law made applicable through the Federal Assimilative Crimes Act, see subsection (4) below. If any conduct of this nature is specifically made punishable by another article of the code, it must be charged as a violation of that article. See subparagraph (5)(a) below. How-ever, see paragraph 59c for offenses committed by commissioned officers, cadets, and midshipmen.
(2)
Disorders and neglects to the prejudice of good order and discipline in the armed forces (clause 1). (a)
To the prejudice of good order and discipline. “To the prejudice of good order and discipline” refers only to acts directly prejudicial to good order and discipline and not to acts which are prejudicial only in a remote or indirect sense. Almost any irregular or improper act on the part of a member of the military service could be regarded as prejudicial in some indirect or remote sense; however, this article does not include these distant effects. It is confined to cases in which the prejudice is reasonably direct and palpable. An act in violation of a local civil law or of a foreign law may be punished if it constitutes a disorder or neglect to the prejudice of good order and discipline in the armed forces. However, see R.C.M. 203 concerning subject-matter jurisdiction.
(b)
Breach of custom of the service. A breach of a custom of the service may result in a violation of clause 1 of Article 134. In its legal sense, “custom” means more than a method of procedure or a mode of conduct or behavior which is merely of frequent or usual occurrence. Custom arises out of long established practices which by common usage have attained the force of law in the military or other community affected by them. No custom may be contrary to existing law or regulation. A custom which has not been adopted by existing statute or regulation ceases to exist when its observance has been generally abandoned. Many customs of the service are now set forth in regulations of the various armed forces. Violations of these customs should be charged under Article 92 as violations of the regulations in which they appear if the regulation is punitive. See paragraph 16c.
(3)
Conduct of a nature to bring discredit upon the armed forces (clause 2). “Discredit” means to injure the reputation of. This clause of Article 134 makes punishable conduct which has a tendency to bring the service into disrepute or which tends to lower it in public esteem. Acts in violation of a local civil law or a foreign law may be punished if they are of a nature to bring discredit upon the armed forces. However, see R.C.M. 203 concerning subject-matter jurisdiction.
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http://usmilitary.about.com/od/punitivearticles/a/134.htm