In Valencia, approximately 130,000 people demonstrated against regional president Carlos Mazón, demanding his resignation due to perceived incompetence in response to catastrophic floods that occurred on October 29, which resulted in at least 220 deaths and extensive property damage. Protesters accused Mazón of failing to issue timely warnings and of acting too slowly during the disaster, with chants such as 'Mazón resign!' and placards reading 'You killed us!' highlighting their outrage. Many citizens expressed frustration over the government's negligence, citing climate denial and inadequate emergency measures as contributing factors to the tragedy. Despite Mazón's defense that the disaster's magnitude was unpredictable, critics pointed out that a red alert had been issued earlier in the day. The protest escalated to clashes with police as demonstrators marched from city hall to regional headquarters, reflecting widespread anger not only in Valencia but also in other cities like Madrid and Alicante. The event, organized by around 20 civic groups, aimed not only for Mazón's resignation but also for legal accountability and protective measures against future disasters.