The slogan has been used by Sinn Féin representatives , appeared on graffiti and political murals , and been shouted by Provisional IRA defendants being convicted in British and Irish courts , and by their supporters in the public gallery . Patrick Magee said it after being sentenced in 1986 for the 1984 Brighton hotel bombing . At the 2018 Sinn Féin ard fheis , new party leader Mary Lou McDonald concluded her speech with " tiocfaidh ár lá " . The phrase , which was not on the script circulated in advance , was criticised by politicians from Fianna Fáil ( " hark back to a very dark time " ) , Fine Gael ( " irresponsible " ) , and the Ulster Unionist Party ( " stale rhetoric " )
Brighton hotel bombing
Brighton hotel bombing
Tiocfaidh ár lá