PHILADELPHIA – Police shot and killed a 27-year-old Black man on a Philadelphia street after yelling at him to drop his knife, sparking violent protests that police said injured 30 officers and led to dozens of arrests. Officers were called to the Cobbs Creek neighborhood and encountered the man, later identified as Walter Wallace, who was holding a knife, Little said. Hundreds of people took to the streets to protest the shooting late Monday into early Tuesday, with interactions between protesters and police turning violent at times, the Philadelphia Inquirer reported. One officer was hospitalized in stable condition with a broken leg and other injuries after she was struck by a pickup truck, police said, while the other injured officers were treated and released. The shooting occurred in a predominantly Black neighborhood in west Philadelphia.