To make it clear, I'm fully against fascism. I don't know WTF antifa actually is, because it seems like a Schrodinger's word. Like, say, "feminism" or "fascism" or "liberalism", the meaning of antifa seems to change based on the convenience of whoever's using it.
I think politically, theoretically, you and are on the same side of centre--I'm basically a classical liberal. As such, I believe in things like freedom of speech, civil liberties, free markets, and low levels of regulation. I think the government should interfere with free markets largely in areas where there's good evidence that the benefits significantly outweigh the downside (universal healthcare with private and public components and anti-trust are the two that immediately come to mind for me.)
Right now, the challenge for me is that in Canada, the left wing has shifted us way left, far from sensible classical liberal policies,and I get the sense that the same is true of Europe. The USA is doing the exact same thing from the opposite side. All of these are toxic trends toward authoritarianism, just from different sides.
That's my point that polarization is terrible--it allows both sides to push us toward authoritarianism by saying that they're doing it to fight back against the evil people on the other side.