Not this again, guys. In a night of what Belfast's assistant police chief called, "sheer thuggery," 56 police officers and two civilians were injured as fights broke out between Protestants and Catholics in the Northern Ireland city. It began when Protestants tried to block a Catholic parade on Friday evening, and began throwing bricks, bottles, and fireworks at police. Four officers were taken to the hospital, but most other injuries were minor. On Thursday night, a crowd in a Catholic neighborhood threw paint bombs and bottles at police.