Well, atleast here in germany antifa does exist.
They even doing commercial for antifa at hippiefestivals, trying to convince people that they try change things, and if theres no other way, they use violence. And thats no problem for them. I myself got into discussion with them zrying to explain that violence is radical, extreme, and it doesnt make big difference to the "radical neonazis" when trying to push things with violence but they dont care. They feel right with using violence, as long as theyre not "right".
Those losers ARE terrorists, they ARE the radicals people dont want.
So yes, antifa does exist. They beat up politicians for other opinions, and theyre acceptet by the western government. They are the longer arm of our left versiffte government.
They are terrorist and should be treated like a terrorist organisation.