Right. Antifa has been imaginary since being founded in 1932 Germany by Soviet operative Ernst Thälmann...or did he mean “imaginative” (in their Agitprop)?
And many of those Antifa ultimately became fervent Nazi supporters, once they saw Hitler implementing pretty much they plans they thought the Communists would.
Stalin pretty much allowed Hitler to kill off all of the KPD, Stalin would have purged them, had Hitler not.