Presumably you mean that it is commonly presented that way by authoritarians who have no idea what they are talking about.

> ironically fascist organization

There is no antifa "organization". It is not centralized, there is no "leadership" or anyone in charge. It's more of a philosophy.

> Antifa is commonly known as an ironically fascist organization that uses violence and intimidation to silence speakers — it's like how the "Democratic People's Republic of Korea" is not really democratic.

That's not "commonly known", that's the spin you'll get from the right-wing in the US who just happen to have heavy fascist tendencies.

Ahh yes let's list out the people who have been silenced by antifa....oh yeah that didn't happen