From the article:
//Critics argue the media tends to excuse violence by Antifa militants just because they are fighting white supremacists and their odious ideology.//
I think that's fair.
When you have a groups like the KKK and the White Supremacists, matching whilst shouting, ""Jews will not replace us" you need an opposing force, because we all know where Jew hate gets us.
A Holocaust.
Indeed, according to the article you linked to, the movement was founded in 1932 to provide a militant far-left group to counter the fast-rising Nazi party.
It's a pity that there still needs to be a group of radicals to opposed Nazi ideology 60 years after the second world war.
I think that the vast majority of good people are uncomfortable with people who try to drum up hatred of the Jews or black people, which is why Antifa will most likely be given a break, because their enemy (Nazis, white supremicists and the KKK) are pretty despicable people.