BUENOS AIRES (AP) — A coalition of labor unions, opposition parties and left-wing organizations marched through downtown Buenos Aires on Friday, in protest of President Javier Milei’s sweeping labor overhaul to be debated in the Senate in the coming hours. The bill, which grants employers greater flexibility in matters of hiring, firing, severance and collective bargaining, has drawn fierce opposition from labor unions and their Peronist allies, who argue it would roll back measures that protect workers from abuse and Argentina’s notoriously frequent economic shocks. “It makes me incredibly angry. Passing a law is one thing, but implementing it is another,” said Ariel Somer, a 48-year-old railway worker protesting near Congress. “In Argentina, progress only happens when workers organize. We will find ways to resist.” Supported by allies of the ruling La Libertad Avanza party, the initiative’s approval would provide Milei with a major legislative victory. He could then showcase these profound economic reforms during his Sunday address at the opening of the ordinary sessions of Congress. The legislation won initial support from the Senate …