Javier Milei is facing his first big challenge on the streets. The general strike called by the General Confederation of Labor (CGT) to protest the Argentine president’s economic policies has swelled into a mass anti-government protest. In addition to the CGT — the largest labor union in the country —, social movements and communities affected by Milei’s sweeping reform plans will march down the streets of Buenos Aires to the doors of Congress on Wednesday. Social organizations expect at least 40,000 people will attend the demonstration in the capital.