What role is the far right playing in the violent anti-migrant protests in Northern Ireland?

The capital of Northern Ireland has had strong anti-immigration demonstrations for two days after the stabbing of a British man by another of Sudanese nationality. The rise of the extreme right has fueled the xenophobic message of violent protests, led mainly by hooded groups. We analyze this movement with Óscar Guardiola, professor at Birkbeck College University of London.