On Friday, August 28, 1964, a scuffle with police at the busy intersection of Twenty-Second Street and Columbia Avenue sparked a three-day riot involving hundreds of North Philadelphians hurling bottles and bricks at police and looting stores. With the Columbia Avenue Riot, Philadelphia joined six other cities, including Jersey City, Paterson, and Elizabeth, New Jersey, that erupted in African American protest during July and August 1964. Similar actions in hundreds of other cities followed by 1968. In Philadelphia, as across the country, urban unrest fractured liberal interracial coalitions and gave rise to law-and-order politics.