3 people are arrested Friday and 2 officers injured , police say . `` Violence is never an acceptable response '' to disagreements , she says . Score: On her first visit as secretary of state , in 2009 , Clinton paid tribute to the efforts of Robinson , McGuinness and other political leaders in helping to secure more than a decade of peaceful progress for Northern Ireland . 6 Northern Ireland is the last leg of the secretary of state 's European tour .
3 people are arrested Friday and 2 officers injured , police say . `` Violence is never an acceptable response '' to disagreements , she says . Score: 6 Northern Ireland is the last leg of the secretary of state 's European tour .