Antifa is a collection of people who are against fascism and racism. I think it depends on what country they are in.
As I understand it, Antifa in Britain (and also most part of West Europe) puts up demonstrations and the like. In Sweden, for example, they also actively fight fascists physically - combat on the streets, grafitti on doors and windows, pouring paint in fascists' mailboxes (
) but also informing people of where the facists live.
The progress, I guess, is in a way indirect. If no one is there to counter-demonstrate the fascists, they would get their propaganda out. People would find it easier to join racist organizations. Now they would have to think about it twice, the risks increases since there is physical danger too.
But I've never heard that they have killed anyone. That wouldn't be so good with the mainstream public, and would give the ruling class another reason to shut down what free speach people have left. Nazis have killed people, even cops. They also have a long history of cocaine and amphetamine dealings.
"In February 1991, while attending the National Grocers' Association, President Bush visited a model supermarket. When taken to the checkout counter and shown how to pass a couple of items over the scanner, he excitedly voiced his admiration for this "new technology." It was evident he had not visited a supermarket in years, if ever."
-Michael Parenti, "Against Empire"