The phrase comes from Javier Milei, Argentina's outspoken libertarian president, who has repeatedly used 'zurdos de mierda' to attack left-wing politicians, journalists and activists. Clipped from his speeches and interviews, the insult travelled quickly through Argentine social media, where supporters turned it into a rallying cry and critics turned it into a meme. It now circulates far beyond Argentina in Spanish-language political edits, used as shorthand for Milei's confrontational style and for dismissing leftist arguments without a lengthy rebuttal.