Protesters gathered on a Boston bridge Friday to demand action on climate change.

The rally took place on the Congress Street Bridge, where a large crowd congregated Friday afternoon.

Members of the grassroots movement "Extinction Rebellion" are calling on governments to implement aggressive programs to protect people and ecosystems.

Experts say rising sea levels will eventually put parts of the Seaport District underwater.

Just a week earlier, a crowd of thousands gathered at Boston's City Hall Plaza for the Climate Strike.