Migra Violenta is straight up fast hc/punk, probably the most well known punk band from Argentina, especially their album Holocausto Capitalista is heavy as fuck. Los Dolares , Venezuela, probably one of the most underrated crust bands in the world with the same openly antiimperialist message, no stoppages. Piromanos del Ritmo from Chile, similar to MV, not as straight forward but still cool. Beatriz Carnicero, Odioso Dios. Chulo, powerviolence bands from Uruguay, Argentina and Colombia, OD is my favorite, tons of like 10 second songs even faster than Lack of Interest does it. Besthöven THE Brazilian crust band, they're around for more than 20 years i think, have splits with all the big names, bit redundant for me but i get the appeal.

But this is the tip of the iceberg only, it's a very rewarding task to submerge into latin american punk/hardcore because there are tons of hidden gems there and basically everything is drenched in leftist politics. This blog has a lot of stuff up for starters just put the countries in the searchbox and you can have a feast.