Support to a Foreign Organization
Is it illegal for a U.S. citizen to provide material support to a group advocating for the revoluationary change of another government?
Re: Support to a Foreign Organization
Such activity might well be interpreted
by the FBI or other law enforcement agencies evaluating it as prohibited under a variety of anti-terrrorism laws which have been added to the U.S Code in the last ten years or so. If so, then yes, in answer to your question, what you've described might well be considered as illegal and enough to get you indicted by a federal grand jury.
And, rhetorically speaking, who needs that?