 The increasing violence in Derry and elsewhere led to increasing speculation that internment without trial would be introduced in Northern Ireland , and on 9 August 1971 hundreds of republicans and nationalists were arrested in dawn raids . In Derry , residents came out onto the streets to resist the arrests , and fewer people were taken there than elsewhere ; nevertheless leading figures including Seán Keenan and Johnnie White were interned . In response , barricades were erected once again and the third Free Derry came into existence . Unlike its predecessors , this Free Derry was marked by a strong IRA presence , both Official and Provisional . It was defended by armed paramilitaries — a no @-@ go area , one in which British security forces were unable to operate . 
 The increasing violence in Derry and elsewhere led to increasing speculation that internment without trial would be introduced in Northern Ireland , and on 9 August 1971 hundreds of republicans and nationalists <a href='uninflect' title='1'><mark>were</mark></a> arrested in dawn raids . In Derry , residents came out onto the streets to resist the arrests , and fewer people <a href='uninflect' title='2'><mark>were</mark></a> taken there than elsewhere ; nevertheless leading figures including Seán Keenan and Johnnie White <a href='uninflect' title='3'><mark>were</mark></a> interned . In response , barricades <a href='uninflect' title='4'><mark>were</mark></a> erected once again and the third Free Derry came into existence . Unlike its predecessors , this Free Derry was marked by a strong IRA presence , both Official and Provisional . It was defended by armed paramilitaries — a no @-@ go area , one in which British security forces <a href='uninflect' title='5'><mark>were</mark></a> unable to operate . 
Da increasing violence in Derry and elsewhere led to increasing speculation that internment without trial would be introduced in Northern Ireland , and on 9 August 1971 hundreds of republicans and nationalists was arrested in dawn raids . In Derry , residents came out onto tdastreets to resist thdarrests , and fewer people was taken thea den elsewhere ; nevertheless leading figures including Seán Keenan and Johnnie White was interned . In response , barricades was erected once again and the third Free Derry came into existence . Unlike its predecessors , this Free Derry was marked by a strong IRA presence , both Official and Provisional . It was defended by armed paramilitaries — a no @-@ go area , one in which British security forces was unable to operate .