The Boxer is a 1997 film by Irish director Jim Sheridan. Starring Daniel DayLewis and Emily Watson, the film centers on the life of a boxer and former Provisional IRA volunteer Danny Flynn, played by DayLewis, who is trying to go straight after his release from prison. The film is the third collaboration between Sheridan and DayLewis, and portrays the increase of splinter groups within the IRA.
Dannys action infuriates Harry Gerard McSorley, a bitter and ruthless IRA lieutenant. Harry feuds with Danny, assassinating the kindly police officer who donates equipment to the boxing club. The murder causes a riot at one of Dannys boxing matches. During the riot, the gymnasium is burned down by Liam, the young son of Maggie, who thinks Danny and his mother are going to elope.Danny has been reconnecting with an old flame, Maggie Emily Watson, now married to an imprisoned IRA man and required by IRA code to remain faithful to him. Their relationship dominates much of the film. Harry sees Danny and Maggies relationship as a way to undermine the authority of her father, Joe Hamill Brian Cox, the grim but warweary IRA local commander who is working for peace. ........
Source: Wikipedia