Police Service of Northern Ireland officers confront U.K. loyalists as they try to force their way into Belfast City Hall in 2012. Police arrested two journalists in relation to allegedly stolen confidential documents about a 1994 massacre. (AP/Peter Morrison)
Police Service of Northern Ireland officers confront U.K. loyalists as they try to force their way into Belfast City Hall in 2012. Police arrested two journalists in relation to allegedly stolen confidential documents about a 1994 massacre. (AP/Peter Morrison)

CPJ demands release of journalists arrested over documents in Northern Ireland