It sounds exactly as it sounds, what one poster on that forum noted.....like they are in direct violation of The Smith Act:
Smith Act of 1940
The Alien Registration Act of 1940, usually called the Smith Act because the antisedition section was authored by Representative Howard W. Smith of Virginia, was adopted at 54 Statutes at Large 670-671 (1940). The Act has been amended several times and can now be found at 18 U.S. Code § 2385 (2000).
§ 2385. Advocating Overthrow of Government.
Whoever knowingly or willfully advocates, abets, advises, or teaches the duty, necessity, desirability, or propriety of overthrowing or destroying the government of the United States or the government of any State, Territory, District or Possession thereof, or the government of any political subdivision therein, by force or violence, or by the assassination of any officer of any such government; or
Whoever, with intent to cause the overthrow or destruction of any such government, prints, publishes, edits, issues, circulates, sells, distributes, or publicly displays any written or printed matter advocating, advising, or teaching the duty, necessity, desirability, or propriety of overthrowing or destroying any government in the United States by force or violence, or attempts to do so; or
Whoever organizes or helps or attempts to organize any society, group, or assembly of persons who teach, advocate, or encourage the overthrow or destruction of any such government by force or violence; or becomes or is a member of, or affiliates with, any such society, group, or assembly of persons, knowing the purposes thereof--
Shall be fined under this title or imprisoned not more than twenty years, or both, and shall be ineligible for employment by the United States or any department or agency thereof, for the five years next following his conviction.
If two or more persons conspire to commit any offense named in this section, each shall be fined under this title or imprisoned not more than twenty years, or both, and shall be ineligible for employment by the United States or any department or agency thereof, for the five years next following his conviction.
As used in this section, the terms "organizes" and "organize", with respect to any society, group, or assembly of persons, include the recruiting of new members, the forming of new units, and the regrouping or expansion of existing clubs, classes, and other units of such society, group, or assembly of persons.
More links in this post. From that post you can follow it back to previous posts that connect more dots. Please take the links too and contemplate what is really afoot here. The illegals/protesters themselves are just useful idiots.