Philadelphia District Attorney Larry Krasner held the first of three town halls on Tuesday night to discuss the possibility of the Trump administration sending National Guard troops to the city as part of a federal crackdown on violent crime.

About 100 people filled the pews at the Salt & Light church in Southwest Philadelphia, where the District Attorney's Office assembled a panel to talk about the legalities of federalizing local law enforcement and the tools cities have to resist the Trump administration's tactics.

"We are here because all over the city are people who do not want an invasion," Krasner told the audience. "All over the city are people who want to save their democracy — and they're looking for a call to action."

Krasner has been among the nation's most vocal critics of

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