3 major US cities rocked by weekend gun violence as cops brace for 4th of July

"They want to get street justice," the Chicago mayor said.

Within 2 and 1/2 hours on Sunday, two people were killed and 17 were wounded in a pair of mass shootings in Chicago. A rash of shootings in Philadelphia since Friday left two people dead and 19 injured. And in New York City's Times Square, a tourist was hurt when he was hit by an errant bullet after a fight allegedly erupted between street vendors. As police investigated the incidents of gun violence that broke out over the weekend in major cities across the nation, law enforcement officials are bracing for more violence during the Fourth of July holiday. Chicago Mayor Lori Lightfoot expressed frustration on Monday over having to address another weekend of rampant shootings in her city despite police boosting patrols and taking more than 5,600 guns off the streets in the first six months of this year.