So now the US government will have the "right" to imprison anyone for "terrorism," if it just claims they're part of "Antifa."
Antifa just means antifascist. Antifa isn't an organization, party, or gang; you can't be an official member.
But the US police state knows that
This happened under Bush, then Obama. The US regime doesn't even have to falsely claim you are a "member" to imprison you.
And "material support" could mean anything: information, advice, a photo, a donation
-information
-advice
-photos
-translation
-computer coding
-donations
-lodging
-transportation