Both a crime. But shouldn't be an equal crime.
According to 6 U.S. Code § 101
(16) The term terrorism means any activity that
(A) involves an act that(i) is dangerous to human life or potentially destructive of critical infrastructure or key resources; and(B) appears to be intended
(ii) is a violation of the criminal laws of the United States or of any State or other subdivision of the United States; and(i) to intimidate or coerce a civilian population;
(ii) to influence the policy of a government by intimidation or coercion; or
(iii) to affect the conduct of a government by mass destruction, assassination, or kidnapping.
Sounds like this act pretty much fits the definition precisely...
There is zero excuse NOT to label ANTIFA as a Terrorist organization.