Officers pushed back members of a march who surged on a police line outside City Hall on Thursday, with police saying four arrests had been made.
One protester told the Philadelphia Inquirer he had been hit by a police club, while a senior police officer was said to have suffered a blow to the lip.
In Baltimore however the scenes were far calmer, with most residents following the 10pm curfew put in place by Mayor Stephanie Rawlings-Blake.
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Carmelo Anthony Marches Alongside Protesters in Baltimore as Demonstrations was originally published on praisecleveland.com