The FBI intelligence bulletin from the bureau’s Phoenix field office, dated May 30, 2019 fell apart into flimsy little propaganda pieces when analyzed. The sources cited in the document's footnotes included the fact that the FBI's investigative involvement was "limited" but provided open source information (i.e., no authorized investigation?), MSM outlets and, I kid you not, "members of the public whose reliability cannot be determined."
Oh, they cite law enforcement and other sources who, since 2014, have many instances of corroboration. Since Q did not start posting until fall of 2017, the source in the FBI document, along with law enforcement are claimed to underpin "key analytic findings" (analytic findings about extremism in general - not evidence of any kind re Q Anon).
I did see a post saying the bulletin also cited Snopes and Wikipedia but since I can't find the whole document anymore, I can't verify that. Here's an excerpt:
Yeah, and note they compiled incidences of violence in the name of Q starting from 2008. . . When Q only started posting on October 27, 2017.
That’s some power they attribute to Q, isn’t it? Q apparently has the ability to encourage violent people to commit acts of violence even before Q ever existed! WOW! Q must have a time machine ability.