I think it should be noted, the difference between antifa the organization and antifa the philosophy.
I am very much ideologically anti-fascist and I believe I would take up arms against a fascist government, however antifa the org has made some questionable calls in the past.
Fair. I think you can understand them as a group still, similarly to how you can see anonymous as a group.
I don't think I'm educated enough to say anything against the group as a whole, as I haven't sat down to do a lot of research on them (I'm realizing now that my comment was made from a BS bias that I had picked up from when I was a conservative).
however I don't think the logic of the source meme on it's own shows someone as fascist just because they oppose the antifa orginization.