Bernie Sanders delivered a firebrand speech Thursday afternoon to a crowd clustered outside City Hall. On a day of national May Day protests against President Donald Trump’s administration that ended with the arrest of dozens of protesters a few blocks from City Hall,

After Sanders’s speech, protesters marched throughout the city and, in some instances, ignored requests by local police to clear the way for rush hour traffic.

Thursday’s rally and march comes amid economic uncertainty created by Trump’s on-again, off-again approach to tariffs — taxes on imported goods — which