Just a public service announcement.
So am I racist because I'm not an antifa nor a fascist? Do I need to be an antifa to be anti-racist?
It's not a group you sign up for. If you're not a racist, then yes, your most natural stance is being against fascism: antifa.
Fascism and racism have a large overlap, because they both target the same minorities. So yes, I think anti-racism needs to include anti-fascism.