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Anti-migrant mobilisation in Ireland has shifted from localised protests to a structured, cross-border movement. This evolution is marked by tactical collaboration between Republic-based nationalist activists and Northern Irish Loyalist networks, overriding historical sectarian divisions. The movement is further amplified by British far-right groups, North American influencers, and Russian-aligned propaganda outlets, which integrate local incidents into global 'Great Replacement' narratives and transnational far-right discourse.

In June 2025, Northern Ireland experienced eight nights of violent unrest, centered in Ballymena, targeting Roma and Romanian migrants following an alleged sexual assault. Social media platforms, particularly Facebook, TikTok, and YouTube, were used to spread hate speech, doxx the locations of families seeking shelter, and livestream violence for profit. The report argues that platforms failed to mitigate these risks in real-time, potentially violating the UK's Online Safety Act (OSA), and calls for a coordinated government response to bridge online and offline risk monitoring.