Direct contact with the FBI is unlikely to produce any results for you in a case of this kind, according to my understanding of how, and on what subjects, they are likely to act. Note that all I can offer is opinion based on what I see in the news.
If, and when, your local District Attorney, State Attorney General, or even local police make a request for FBI assistance, something might be taken up, but a complaint directly from you most likely will get filed and ignored, or will get filed with a bunch of other similar ones "for later."
The FBI should have no interest in your political views, unless you've advocated some form of violent action that I've not seen in posts I've read here. They might make a file on you for associating with "known subversives," but that's a risk you take just by being here(?).
Especially with the current administration, I don't think you can really feel safe about them knowing anything about you, but in some cases it's necessary to take a risk. When it's appropriate for them to be brought in, the risk is probably reasonable.
It's also quite likely that they already have both of us "on file" for things we've said here; and thus far they haven't called me in ...
(but of course, leave the porch light on so the neighbors can be witnesses when they haul you off. ;*) )
Another marginal help source could be a local news media "consumer advocate." While your specific case probably isn't really a consumer issue, safe use of the internet IS. The media advocate can't really do anything directly for you, but having "the media" asking the cop shop about your kind of situation can sometimes be an effective "needle" to prompt a little more interest. You shouldn't be at risk of having your name all over the media, although there might be some leakage of info if they decide to pursue a story.
You could even write an appropriate item to "Dear Abby," etc., although the "influence" to be gained with the real authorities would likely be minimal - but she might suggest a decent support group.