mightymoose - thanks.
An online merchandiser which offers customers and designers a market to post their graphics on T-shirts, etc., took down this design (and two other similar ones), writing:
"Your listing was removed due to an infringement claim by the intellectual property rights owner. We had previously been Contacted by legal representatives from the (name of national group); and at their request, we remove products which infringe upon their rights from the (merchandiser site)."
The merchandiser is a private company and I have no desire to argue with them about their judgement of these items (which I expected would sell poorly), but it signals to me that the national group might hassle me about my online give away of the designs. Is this type of graphic protected by the First Amendment?