Railing against “tax breaks for billionaires” and issuing a warning to Pennsylvania lawmakers, Sen. Bernie Sanders delivered a firebrand speech Thursday afternoon to a crowd clustered outside City Hall.

A massive crowd gathered at City Hall in Philadelphia Thursday for a May Day rally and to see Vermont Sen. Bernie Sanders speak. The "For Workers, Not Billionaires" rally on the north side of City Hall drew a large crowd and shut down streets in the area.

Hundreds gathered in Philadelphia, Pennsylvania, on Thursday afternoon to participate in the “For the workers, not the millionaires, May Day rally.” Sen. Bernie Sanders (I-VT), who reportedly has a net worth of $3 million,