Abortus Vrij de Vrouw Beslist! by Basta! Translates as Abortion Free, The Woman Decides. Belgian antifascist pro-choice song from the 70s. Amazing saxophone solo.
Most Partisan songs are bangers, I would recommend "La brigata Garibaldi" , written by the same socialist partisans that ended up capturing Benito Mussolini.
Ghosts of Cable Street by The Men They Couldn't Hang - Tells the story of a real piece of history. Oswald Mosley tried to lead a march through the East End, and a bunch of dock workers and factory boys with pipes and two by fours showed up to beat his ass into the ground.
James Connolly by Black 47 - I think it's fair to call songs about Irish socialists fighting British oppression "anti-fascist", and this one is a banger.
People's Champ by The Arkells - Take your pick as to whether this is talking about Doug Ford or Donald Trump, but it's a damn good fuck you to right wing populist either way.
Also shout out to just all of Moscow Death Brigade. Anti-fascist Russian hip hop that goes seriously fucking hard. Check out Brother and Sisterhood or Boltcutter
I don't know how antifascist this song is but Tucker Carlson Sucks by Ricky Rochelle is a pretty good one.
I swear with all the punk rock I listen to, I thought I would have more explicitly antifaschist songs in my library.
I not sure if these count as explicitly antifascist, but I really like Kingmaker by Great American Ghost and Saurian King by Shadow of Intent. Kingmaker's about QAnon and Saurian King is about the rise of the Nazis.
Pro immigration song that is catchy as fuck. Lot of time I find political songs can be preachy instead of a song first. This is not one of those cases. Wonderful punk song.
The Glory of the Ocean by Agriculture (Atmospheric Black Metal)
I’d love to shout out Black Metal Rainbows a project designed to lift up queer black metal projects, as well as other leftist or antifascist artists. there is also a book on it which I also recommend, I loved reading it.