Riots broke out in Belfast after a stabbing attack by a man from Sudan that left a victim seriously injured. The attack triggered anti-immigrant violence in several parts of Northern Ireland. This is a photo gallery curated by AP photo editors.

U.K. officials hope to avoid a repeat of last summer’s anti-immigrant violence.

Northern Ireland police appealed for calm Tuesday after a stabbing in Belfast by a Sudanese suspect, captured in a graphic video, prompted calls for anti-immigration protests from…