Article Photos: 29 Belfast cops hurt in Catholic-Protestant clash 1/4

Riot police stand next to a burned out car after Loyalist protesters attacked police lines, in east BelfastNorthern Ireland, Saturday Jan. 12, 2013. Police used water cannons as four officers were injured during sectarian clashes between loyalists and republicans in east Belfast, Saturday. Trouble flared after a city centre demonstration against the council's decision to limit the number of days the Union flag is flown from City Hall (AP Photo/Paul Faith/PA) UNITED KINGDOM OUT