> It's based on three designated foreign terrorist organizations, notably the PKK.
In this context, "designated foreign terrorist organizations" is not an explanation, but a tautology. The matter at hand is how and why something got onto that list.
The antifa remark relates to the Rote Hilfe situation. In my opinion, it's an example of how populist rhetoric became a major overreach with real consequences prior to the incident at hand. Rote Hilfe had a very weak relation to "Antifa Ost" (hardly worth US attention). That's how they got cancelled: https://www.state.gov/releases/office-of-the-spokesperson/20...
So the antifa moral panic is indeed very much relevant.
But decide for yourself, if "Antifa Ost" deserves US anti-terrorism attention to the extent of OFAC sanctions, or if it's maaaybe populist action... https://en.wikipedia.org/wiki/Dresden_left-wing_extremism_tr...
Incidentally, funny how the NSU isn't on that list, hm?
It's neither an explanation nor a tautology; it's an element of US law.