 Republican Sinn Féin , a party which split from the main body of Sinn Féin in 1986 and which had been involved in the organisation of the counter-demonstration, have declared that it was irresponsible for the authorities to allow the marches to go ahead.
<clarity>  Republican Sinn Féin , a party which split from the main body of Sinn Féin in 1986 and which had been involved in the organisation of the counter-demonstration, have declared that it was irresponsible for the authorities to allow the marches to go ahead.
 , a party which split from the main body of Sinn Féin in 1986 and which had been involved in the organisation of the counter-demonstration, have declared that it was irresponsible for the authorities to allow the marches to go ahead.