@HebrideanHecate @KeepTakingTheSoma From what I've seen, they get loads of money from a large number of individual donors, who ARE the useful idiots, and have bought into the "fighting fascism" bull.
Also, while I haven't yet read Ngo's book, it seems that Antifa's practices seem to be very low-budget. They specifically go for DIY, low level, high intensity mayhem. Their recruitment strategy also seems similar to cults, in that it's person-to-person, slow-boil process that doesn't necessarily need much money. This sort of thing would suit them, because they prefer to operate in the shadows. Any high-expense methods or tactics would also be likely to draw more attention.