Is social media to blame? After a brutal stabbing, anti-migrant riots have broken out in Northern Ireland. Some blame far-right agitators, but others say it is a result of political failure.
Fear on the streets as Belfast burns
Digital division: Social media is being blamed for fuelling anti-migrant riots by amplifying extremist rhetoric and exploiting deep-seated local political anxieties. Glossary
Arab world - The part of the world in which Arab culture and the Arabic language are dominant. It is considered to stretch from Morocco in North Africa to Iraq in the Middle East.
Arab Spring - A series of mass protests across the Arab World against dictatorships that had stood for decades. In Tunisia, the protesters succeeded in creating a democratic government, but many other countries collapsed into civil war or experienced new dictatorships.
Autocrat - A leader who rules by force and with absolute power, without the permission of others.
Elon Musk - A South African-born entrepreneur whose companies have included the online payment service PayPal. He now controls Twitter, renamed 'X'.
Tommy Robinson - A British far-right activist. He was a founder of the EDL (English Defence League). His real name is Stephen Yaxley-Lennon and he has served a number of prison terms.
X - A social media network, formerly known as Twitter and owned by Elon Musk.
Far-Right - The extreme right wing of a political party or group, favouring free enterprise, private rather than state ownership and traditional values.
Algorithm - Any set of rules followed by a computer. In the context of social media, “the algorithm” refers to the intelligent AI that learns the interests of the user and presents them with posts that it thinks will interest them.
Right-wing - Sometimes referred to as 'conservative', this is a range of political beliefs that emphasise the value of tradition, individual freedom and responsibility, low taxes and a hands-off approach to government.
Fomenting - Encouraging or stimulating. It derives from an old French verb meaning to warm.
Populist - The term comes from the People's Party, which operated in the USA in the 1890s. Now, it is often used to refer to any movement that makes a distinction between the "people" and the corrupt "establishment".
Catholic - Follower of the Catholic church, a Christian denomination with over a billion followers worldwide, led by the Pope.
Republican - Somebody who supports the idea of a country having an elected head of state, such as a president, rather than a hereditary king or queen.
Protestant - A Christian religious movement that began in Europe in the early 16th Century.
Unionist - A unionist in Ireland is someone who supports maintaining Northern Ireland's political union with the United Kingdom and shows loyalty to the British Crown.