Someone explain to me. Who does Antifa suppose to consist of?

[haele]

18. Seriously? A collective term for an unorganized group of people fighting Fascism - Anti -Fascist

Now, that being said, some European anarchist cells will sometimes call themselves Antifa, because anyone who doesn't buy into their particular fantasy that all hierarchies are inherently oppressive (except, of course, for the ones they are on top in) is a Fascist.
Sort of like the Right calling anyone who isn't as conservative as they are Communists.

Antifa in America tends to comprise of anyone who can head out when there's a protest event to support some form of threatened Civil Rights and participate, whether they're part of an organized group (i.e., Moms for Justice), or just willing to go out and hold a sign in solidarity.

Not really organized, other than the local protest group who might be organized enough to apply for a permit on any particular event.

Haele