Mark Ruffalo calls Flint's water crisis a 'national emergency' in recent visit

The actor, with billionaire climate activist Tom Steyer, joined local organizers to demand government accountability and the declaration of a disaster zone

Local activists in Flint, Michigan, were joined on Monday by actor Mark Ruffalo and billionaire climate activist Tom Steyer to amplify calls for long-term solutions in addressing the city's water-contamination crisis.

Less than 24 hours after the Democratic presidential candidates left Flint to continue campaigning ahead of Michigan's primary on Tuesday, the environmental advocates joined local organizers inside a downtown church to demand accountability and approval of a disaster declaration for the cash-strapped city, which would release additional resources.